Contract 0xf840FCe89f15ADfF63cdae750Bce8B1408c205C7 2

 

Contract Overview

Balance:
0 MATIC

MATIC Value:
$0.00

Token:
 
Txn Hash
Method
Block
From
To
Value [Txn Fee]
0x106f48b0a8188a3e00ec4c939c77b5783540b5eed52114bbcf5bf78af08d1bf8Withdraw339975922022-10-06 9:21:50120 days 6 hrs ago0xf9b70f5d1f44ba68b4b16840d0d530cc68939440 IN  0xf840fce89f15adff63cdae750bce8b1408c205c70 MATIC0.00438045531
0x5e8b8e11ad7a274de7e2b4bd1b74d1fef8035c681a612e8c9b5e2fe6b32647b3Withdraw319573482022-08-16 12:36:44171 days 3 hrs ago0xf9b70f5d1f44ba68b4b16840d0d530cc68939440 IN  0xf840fce89f15adff63cdae750bce8b1408c205c70 MATIC0.00438045531
0x521f87358bca64ab69af98b3a81e0e7408e65a32d2d13917f9131f5ec9ea1f95Withdraw306360722022-07-12 8:57:29206 days 6 hrs ago0xf9b70f5d1f44ba68b4b16840d0d530cc68939440 IN  0xf840fce89f15adff63cdae750bce8b1408c205c70 MATIC0.00438045531
0x727acdf132327103db1655e61384a0a7943aafe047bd32aae3e565dc7f1d7076Withdraw302894102022-07-03 12:22:11215 days 3 hrs ago0xef669b7c021853c091b5ef77068594ff081f987e IN  0xf840fce89f15adff63cdae750bce8b1408c205c70 MATIC0.00792821677756.107121314
0x98e8884bf2797f685b29264da1086e025155f14d22eae6e043945457011967f5Deposit297718562022-06-20 0:07:30228 days 15 hrs ago0x73c5d87fca8f0ca528bab80e551d50e527f4129e IN  0xf840fce89f15adff63cdae750bce8b1408c205c70 MATIC0.003598206272 30.070000024
0xdebf019d3ba6452fdeea7268aa6390087b438ee28d6585efd61af441fdb10f49Withdraw296738472022-06-17 10:55:07231 days 5 hrs ago0xf9b70f5d1f44ba68b4b16840d0d530cc68939440 IN  0xf840fce89f15adff63cdae750bce8b1408c205c70 MATIC0.004380455 31
0x5c22ebe45cf2e5e697f05ad9e38a1aeec44ace39de4d4dc838f7f8e82e4463bfWithdraw280197272022-05-07 5:28:10272 days 10 hrs ago0xf9b70f5d1f44ba68b4b16840d0d530cc68939440 IN  0xf840fce89f15adff63cdae750bce8b1408c205c70 MATIC0.00438045531
0xa523fb47e71109e41668ea362fdf949c3014e8d9236f2127c5f3e480d4dd7adeWithdraw265846492022-03-31 17:13:40308 days 22 hrs ago0xf9b70f5d1f44ba68b4b16840d0d530cc68939440 IN  0xf840fce89f15adff63cdae750bce8b1408c205c70 MATIC0.00438045531
0xad5cac0ffd3beeed389bb824389d1d793e56e2420d89d6b3dfcb32c3c615708eDeposit256899072022-03-07 14:57:56333 days 57 mins ago0x3b6dbcbb0ebd1106a5926182e8886d916dd1ec97 IN  0xf840fce89f15adff63cdae750bce8b1408c205c70 MATIC0.004828453672 30.079700433
0x9d14c11f0e2386f65e8cd2bf7497883a2fcd48d81a57ed4e5c6304b6cb11e620Withdraw255765352022-03-04 16:10:57335 days 23 hrs ago0xf9b70f5d1f44ba68b4b16840d0d530cc68939440 IN  0xf840fce89f15adff63cdae750bce8b1408c205c70 MATIC0.00382555300230.7686053
0xbb2e1002526bbb08ac1a4e509536759211424b93c92f5ea4e16143bb3c53451bWithdraw255761472022-03-04 15:55:29336 days ago0xf9b70f5d1f44ba68b4b16840d0d530cc68939440 IN  0xf840fce89f15adff63cdae750bce8b1408c205c70 MATIC0.00434775791330.7686063
0x3979cbb4ad5717f6f0e4d860dbd771cd32410e47056acdbb31280101ee5f2f49Withdraw248460382022-02-12 8:28:33356 days 7 hrs ago0xf9b70f5d1f44ba68b4b16840d0d530cc68939440 IN  0xf840fce89f15adff63cdae750bce8b1408c205c70 MATIC0.00018386291.3
0x53d27c53e5ecb553c82fcacab3ad6deae45edc6c59c199cff978a5c7b754d07dWithdraw248447712022-02-12 7:40:01356 days 8 hrs ago0xf9b70f5d1f44ba68b4b16840d0d530cc68939440 IN  0xf840fce89f15adff63cdae750bce8b1408c205c70 MATIC0.00018369651.3
0x701cb179832014ac832371be636afbfee2feb9c276ada06971c8d29fb0084987Withdraw246732672022-02-07 22:58:31360 days 16 hrs ago0xf9b70f5d1f44ba68b4b16840d0d530cc68939440 IN  0xf840fce89f15adff63cdae750bce8b1408c205c70 MATIC0.00016163291.3
0xeeaed9a5b69356f5e2c60fd46c6253aaee01c9dd9b43c7d868ea3c877571ef0dWithdraw246731502022-02-07 22:54:29360 days 17 hrs ago0xf9b70f5d1f44ba68b4b16840d0d530cc68939440 IN  0xf840fce89f15adff63cdae750bce8b1408c205c70 MATIC0.00018369651.3
0xbf6ba1d7f6590b079cb254423c39d6e902c06d4b57aee5c0a23000f88beec088Withdraw245021092022-02-03 13:24:59365 days 2 hrs ago0xf9b70f5d1f44ba68b4b16840d0d530cc68939440 IN  0xf840fce89f15adff63cdae750bce8b1408c205c70 MATIC0.00016146651.3
0x50c8c7e7da1ba976d38499041b035864ca715380ca5b6790d425adb351787989Withdraw245020982022-02-03 13:24:37365 days 2 hrs ago0xf9b70f5d1f44ba68b4b16840d0d530cc68939440 IN  0xf840fce89f15adff63cdae750bce8b1408c205c70 MATIC0.00018386291.3
0xe0b51ae0a7c66fe79810ed6f94676e761d59982d234d8f2ac7c581573fa16d9eDeposit243407792022-01-30 11:18:47369 days 4 hrs ago0xf9b70f5d1f44ba68b4b16840d0d530cc68939440 IN  0xf840fce89f15adff63cdae750bce8b1408c205c70 MATIC0.00020455241.3
0x55cb16ebb80001bb3f20a3f810719797bb5e83174ba516e8c31d9a35ca42955fDeposit243407742022-01-30 11:18:37369 days 4 hrs ago0xf9b70f5d1f44ba68b4b16840d0d530cc68939440 IN  0xf840fce89f15adff63cdae750bce8b1408c205c70 MATIC0.00023087741.3
0x2e431108f7879062f26bd6a15ad377f4fc9e55b21c6ec0231d77d6d4e9d18549Emergency Withdr...226238012021-12-17 7:54:32413 days 8 hrs ago0x0941c66eb7926cd4800cf8d30e1251a3974778e5 IN  0xf840fce89f15adff63cdae750bce8b1408c205c70 MATIC0.0009024630
0x8f8c6490c440eb7455abef4c2ad8f951929c53bf9d41385b7a12f88e1310b0b5Emergency Withdr...226237722021-12-17 7:53:34413 days 8 hrs ago0x0941c66eb7926cd4800cf8d30e1251a3974778e5 IN  0xf840fce89f15adff63cdae750bce8b1408c205c70 MATIC0.0008949930
0x97b5ecebacf05862e8a0a44054cd4e8374cec75591a91fb425e54f28c7143892Emergency Withdr...226237382021-12-17 7:52:22413 days 8 hrs ago0x0941c66eb7926cd4800cf8d30e1251a3974778e5 IN  0xf840fce89f15adff63cdae750bce8b1408c205c70 MATIC0.0013189530
0x976ede898d4e73f5868c993a7ff3ae9728c9973d173a9cdf4a02e7bec65c4134Emergency Withdr...226237252021-12-17 7:51:56413 days 8 hrs ago0x0941c66eb7926cd4800cf8d30e1251a3974778e5 IN  0xf840fce89f15adff63cdae750bce8b1408c205c70 MATIC0.0013185930
0xf055e195b9b4ba81c8bab8c743c1a2716086218307c4ba8af28cd063a243487fDeposit226235552021-12-17 7:46:08413 days 8 hrs ago0x0941c66eb7926cd4800cf8d30e1251a3974778e5 IN  0xf840fce89f15adff63cdae750bce8b1408c205c70 MATIC0.0037284330
0x7664285b835a5d5e8ca2cc71eb8b2226f0e02eb896c2f24cfd82b6ae0c73e0b2Deposit226235372021-12-17 7:45:28413 days 8 hrs ago0x0941c66eb7926cd4800cf8d30e1251a3974778e5 IN  0xf840fce89f15adff63cdae750bce8b1408c205c70 MATIC0.0037245930
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Contract Source Code Verified (Exact Match)

Contract Name:
MasterChef

Compiler Version
v0.6.12+commit.27d51765

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license

Contract Source Code (Solidity)

/**
 *Submitted for verification at polygonscan.com on 2021-07-01
*/

// File: contracts/SafeMath.sol

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts with custom message when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

// File: contracts/IBEP20.sol

pragma solidity >=0.6.4;

interface IBEP20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the token decimals.
     */
    function decimals() external view returns (uint8);

    /**
     * @dev Returns the token symbol.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the token name.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the bep token owner.
     */
    function getOwner() external view returns (address);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address _owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

// File: contracts/Address.sol

pragma solidity >=0.6.2 <0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: value }(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// File: contracts/SafeBEP20.sol

pragma solidity >=0.6.0 <0.8.0;

/**
 * @title SafeBEP20
 * @dev Wrappers around BEP20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeBEP20 for IBEP20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeBEP20 {
    using SafeMath for uint256;
    using Address for address;

    function safeTransfer(IBEP20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(IBEP20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IBEP20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(IBEP20 token, address spender, uint256 value) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        // solhint-disable-next-line max-line-length
        require((value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeBEP20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(IBEP20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).add(value);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(IBEP20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeBEP20: decreased allowance below zero");
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IBEP20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeBEP20: low-level call failed");
        if (returndata.length > 0) { // Return data is optional
            // solhint-disable-next-line max-line-length
            require(abi.decode(returndata, (bool)), "SafeBEP20: BEP20 operation did not succeed");
        }
    }
}

// File: contracts/Context.sol

pragma solidity >=0.6.0 <0.8.0;

/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with GSN meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address payable) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

// File: contracts/Ownable.sol

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor () internal {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

// File: contracts/ReentrancyGuard.sol

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor () internal {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and make it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

// File: contracts/BEP20.sol

pragma solidity >=0.4.0;

/**
 * @dev Implementation of the {IBEP20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {BEP20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-BEP20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin guidelines: functions revert instead
 * of returning `false` on failure. This behavior is nonetheless conventional
 * and does not conflict with the expectations of BEP20 applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IBEP20-approve}.
 */
contract BEP20 is Context, IBEP20, Ownable {
    using SafeMath for uint256;

    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;
    uint8 private _decimals;

    /**
     * @dev Sets the values for {name} and {symbol}, initializes {decimals} with
     * a default value of 18.
     *
     * To select a different value for {decimals}, use {_setupDecimals}.
     *
     * All three of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name, string memory symbol) public {
        _name = name;
        _symbol = symbol;
        _decimals = 18;
    }

    /**
     * @dev Returns the bep token owner.
     */
    function getOwner() external override view returns (address) {
        return owner();
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public override view returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public override view returns (string memory) {
        return _symbol;
    }

    /**
    * @dev Returns the number of decimals used to get its user representation.
    */
    function decimals() public override view returns (uint8) {
        return _decimals;
    }

    /**
     * @dev See {BEP20-totalSupply}.
     */
    function totalSupply() public override view returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {BEP20-balanceOf}.
     */
    function balanceOf(address account) public override view returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {BEP20-transfer}.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount) public override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    /**
     * @dev See {BEP20-allowance}.
     */
    function allowance(address owner, address spender) public override view returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {BEP20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
     * @dev See {BEP20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {BEP20};
     *
     * Requirements:
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for `sender`'s tokens of at least
     * `amount`.
     */
    function transferFrom (address sender, address recipient, uint256 amount) public override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(
            sender,
            _msgSender(),
            _allowances[sender][_msgSender()].sub(amount, 'BEP20: transfer amount exceeds allowance')
        );
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {BEP20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {BEP20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, 'BEP20: decreased allowance below zero'));
        return true;
    }

    /**
     * @dev Creates `amount` tokens and assigns them to `msg.sender`, increasing
     * the total supply.
     *
     * Requirements
     *
     * - `msg.sender` must be the token owner
     */
    function mint(uint256 amount) public onlyOwner returns (bool) {
        _mint(_msgSender(), amount);
        return true;
    }

    /**
     * @dev Moves tokens `amount` from `sender` to `recipient`.
     *
     * This is internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer (address sender, address recipient, uint256 amount) internal virtual {
        require(sender != address(0), 'BEP20: transfer from the zero address');
        require(recipient != address(0), 'BEP20: transfer to the zero address');

        _balances[sender] = _balances[sender].sub(amount, 'BEP20: transfer amount exceeds balance');
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements
     *
     * - `to` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal {
        require(account != address(0), 'BEP20: mint to the zero address');

        _totalSupply = _totalSupply.add(amount);
        _balances[account] = _balances[account].add(amount);
        emit Transfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal {
        require(account != address(0), 'BEP20: burn from the zero address');

        _balances[account] = _balances[account].sub(amount, 'BEP20: burn amount exceeds balance');
        _totalSupply = _totalSupply.sub(amount);
        emit Transfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
     *
     * This is internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve (address owner, address spender, uint256 amount) internal {
        require(owner != address(0), 'BEP20: approve from the zero address');
        require(spender != address(0), 'BEP20: approve to the zero address');

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`.`amount` is then deducted
     * from the caller's allowance.
     *
     * See {_burn} and {_approve}.
     */
    function _burnFrom(address account, uint256 amount) internal {
        _burn(account, amount);
        _approve(account, _msgSender(), _allowances[account][_msgSender()].sub(amount, 'BEP20: burn amount exceeds allowance'));
    }
}

// File: contracts/RACOON.sol

pragma solidity 0.6.12;


// PolyRacoon Token
contract PolyRacoon is BEP20{
    // Burn address
    address public constant BURN_ADDRESS = 0x000000000000000000000000000000000000dEaD;
    // DEV address
    address public constant DEV_ADDRESS = 0x461572c60D6Cfc76C75e9C61ac6708Fec60c5E48;
    // Fee address
    address public constant FEE_ADDRESS = 0x15a63C117fc1F688Dc96060af14319A4688e98ab;
    
    // Max transfer rate: 5%.
    uint16 public constant MAXIMUM_TRANSFER_RATE = 500;
    
    // Max transfer rate: 0.5%.
    uint16 public constant MINIMUM_TRANSFER_RATE = 50;

    // Anti Whale! Max transfer amount rate in basis points. 2.5%!
    uint16 public maxTransferAmountRate = 250;
    
    // Transfer Burn Rate: 4%.
    uint16 public constant BURN_RATE = 40;
    
    // Transfer FEE Rate: 1%.
    uint16 public constant FEE_RATE = 10;
    
    // Addresses that excluded from antiWhale
    mapping(address => bool) private _excludedFromAntiWhale;
    
    // The operator can only update the transfer tax rate
    address private _operator;
    
    // Events
    event OperatorTransferred(address indexed previousOperator, address indexed newOperator);
    event MaxTransferAmountRateUpdated(address indexed operator, uint256 previousRate, uint256 newRate);

    modifier onlyOperator() {
        require(_operator == msg.sender, "operator: caller is not the operator");
        _;
    }

    modifier antiWhale(address sender, address recipient, uint256 amount) {
        if (maxTransferAmount() > 0) {
            if (
                _excludedFromAntiWhale[sender] == false
                && _excludedFromAntiWhale[recipient] == false
            ) {
                require(amount <= maxTransferAmount(), "RACOON::antiWhale: Transfer amount exceeds the maxTransferAmount");
            }
        }
        _;
    }
    /**
     * @notice Constructs the PolyRacoon contract.
     */
    constructor() public BEP20('PolyRacoon Token', 'RACOON') {
        _operator = _msgSender();
        emit OperatorTransferred(address(0), _operator);

        _excludedFromAntiWhale[msg.sender] = true;        
        _excludedFromAntiWhale[address(this)] = true;
        _excludedFromAntiWhale[BURN_ADDRESS] = true;
        _excludedFromAntiWhale[FEE_ADDRESS] = true;
    }

    /// @notice Creates `_amount` token to `_to`. Must only be called by the owner (MasterChef).
    function mint(address _to, uint256 _amount) public onlyOwner {
        _mint(_to, _amount);
    }

    function _transfer(address sender, address recipient, uint256 amount) internal virtual override antiWhale(sender, recipient, amount) {
        if (recipient == BURN_ADDRESS || sender == DEV_ADDRESS || recipient == FEE_ADDRESS ) {
            super._transfer(sender, recipient, amount);
        } 
        
        else {
            // 4.5% of every transfer burnt
            uint256 burnAmount = amount.mul(BURN_RATE).div(1000);
            
            // 0.5% of every transfer ist sent to FEE_ADDRESS
            uint256 feeAmount = amount.mul(FEE_RATE).div(1000);
            
            // 0% of transfer sent to recipient
            uint256 sendAmount = amount.sub(burnAmount).sub(feeAmount);
            require(amount == sendAmount + burnAmount + feeAmount, "tokens::transfer: Burn value invalid");

            super._transfer(sender, BURN_ADDRESS, burnAmount);
            super._transfer(sender, FEE_ADDRESS, feeAmount);
            super._transfer(sender, recipient, sendAmount);
            amount = sendAmount;
        }
    }
    /**
     * @dev Returns the max transfer amount.
     */
    function maxTransferAmount() public view returns (uint256) {
        return totalSupply().mul(maxTransferAmountRate).div(10000);
    }

    /**
     * @dev Returns the address is excluded from antiWhale or not.
     */
    function isExcludedFromAntiWhale(address _account) public view returns (bool) {
        return _excludedFromAntiWhale[_account];
    }
    /**
     * @dev Update the max transfer amount rate.
     * Can only be called by the current operator.
     * Maximum Transfer Amount rate is hardcoded to 5%.
     * Minimum Transfer Amount rate is hardcoded to 0.5%.
     */
    function updateMaxTransferAmountRate(uint16 _maxTransferAmountRate) public onlyOperator {
        require(_maxTransferAmountRate <= MAXIMUM_TRANSFER_RATE, "RACOON::updateMaxTransferAmountRate: Max transfer amount rate must not exceed the maximum rate.");
        require(_maxTransferAmountRate >= MINIMUM_TRANSFER_RATE, "RACOON::updateMaxTransferAmountRate: Max transfer amount rate can not be bleow minimum rate.");
        emit MaxTransferAmountRateUpdated(msg.sender, maxTransferAmountRate, _maxTransferAmountRate);
        maxTransferAmountRate = _maxTransferAmountRate;
    }

    function setExcludedFromAntiWhale(address _account, bool _excluded) public onlyOperator {
        _excludedFromAntiWhale[_account] = _excluded;
    }
    /**
     * @dev Returns the address of the current operator.
     */
    function operator() public view returns (address) {
        return _operator;
    }
    /**
     * @dev Transfers operator of the contract to a new account (`newOperator`).
     * Can only be called by the current operator.
     */
    function transferOperator(address newOperator) public onlyOperator {
        require(newOperator != address(0), "RACOON::transferOperator: new operator is the zero address");
        emit OperatorTransferred(_operator, newOperator);
        _operator = newOperator;
    }

}

// File: contracts/Masterchef.sol

pragma solidity 0.6.12;


// MasterChef is the master of RACOON. He can make RACOON and he is a fair guy.
//
// Note that it's ownable and the owner wields tremendous power. The ownership
// will be transferred to a governance smart contract once RACOON is sufficiently
//
// Have fun reading it. Hopefully it's bug-free. God bless.


contract MasterChef is Ownable, ReentrancyGuard {
    using SafeMath for uint256;
    using SafeBEP20 for IBEP20;

    // Info of each user.
    struct UserInfo {
        uint256 amount;         // How many LP tokens the user has provided.
        uint256 rewardDebt;     // Reward debt. See explanation below.
        //
        // We do some fancy math here. Basically, any point in time, the amount of RACOONs
        // entitled to a user but is pending to be distributed is:
        //
        //   pending reward = (user.amount * pool.accRacoonPerShare) - user.rewardDebt
        //
        // Whenever a user deposits or withdraws LP tokens to a pool. Here's what happens:
        //   1. The pool's `accRacoonPerShare` (and `lastRewardBlock`) gets updated.
        //   2. User receives the pending reward sent to his/her address.
        //   3. User's `amount` gets updated.
        //   4. User's `rewardDebt` gets updated.
    }

    // Info of each pool.
    struct PoolInfo {
        IBEP20 lpToken;           // Address of LP token contract.
        uint256 allocPoint;       // How many allocation points assigned to this pool. Racoons to distribute per block.
        uint256 lastRewardBlock;  // Last block number that Racoons distribution occurs.
        uint256 accRacoonPerShare;   // Accumulated Racoons per share, times 1e12. See below.
        uint16 depositFeeBP;      // Deposit fee in basis points
    }

    // The Racoon TOKEN!
    PolyRacoon public racoon;
    
    // Dev address.
    address public devAddress = 0x461572c60D6Cfc76C75e9C61ac6708Fec60c5E48;
    
    // Deposit Fee address
    address public feeAddress = 0x15a63C117fc1F688Dc96060af14319A4688e98ab;
    
    // Racoon tokens created per block.
    uint256 public racoonPerBlock;
    
    // Bonus muliplier for early racoon makers.
    uint256 public constant BONUS_MULTIPLIER = 1;

    // Initial emission rate: 1 racoon per block.
    uint256 public constant INITIAL_EMISSION_RATE = 1000 finney;
    
    // Minimum emission rate: 0.00 racoon per block.
    uint256 public constant MINIMUM_EMISSION_RATE = 0 finney;
    
    // Reduce emission every 7200 blocks ~ 6 hours.
    uint256 public constant EMISSION_REDUCTION_PERIOD_BLOCKS = 7200;
    
    // Emission reduction rate per period in basis points: 5%.
    uint256 public constant EMISSION_REDUCTION_RATE_PER_PERIOD = 500;
    
    // Last reduction period index
    uint256 public lastReductionPeriodIndex = 0;

    // Info of each pool.
    PoolInfo[] public poolInfo;
    
    // Info of each user that stakes LP tokens.
    mapping(uint256 => mapping(address => UserInfo)) public userInfo;
    
    // Total allocation points. Must be the sum of all allocation points in all pools.
    uint256 public totalAllocPoint = 0;
    
    // The block number when racoon mining starts.
    uint256 public startBlock;


    event Deposit(address indexed user, uint256 indexed pid, uint256 amount);
    event Withdraw(address indexed user, uint256 indexed pid, uint256 amount);
    event EmergencyWithdraw(address indexed user, uint256 indexed pid, uint256 amount);
    event EmissionRateUpdated(address indexed caller, uint256 previousAmount, uint256 newAmount);


    constructor(
        PolyRacoon _racoon,
        uint256 _startBlock
        
    ) public {
        racoon = _racoon;
        startBlock = _startBlock;
        racoonPerBlock = INITIAL_EMISSION_RATE;
    }

    function poolLength() external view returns (uint256) {
        return poolInfo.length;
    }

    // Add a new lp to the pool. Can only be called by the owner.
    // XXX DO NOT add the same LP token more than once. Rewards will be messed up if you do.
    function add(uint256 _allocPoint, IBEP20 _lpToken, uint16 _depositFeeBP, bool _withUpdate) public onlyOwner {
        require(_depositFeeBP <= 400, "add: invalid deposit fee basis points");
        if (_withUpdate) {
            massUpdatePools();
        }
        uint256 lastRewardBlock = block.number > startBlock ? block.number : startBlock;
        totalAllocPoint = totalAllocPoint.add(_allocPoint);
        poolInfo.push(PoolInfo({
            lpToken: _lpToken,
            allocPoint: _allocPoint,
            lastRewardBlock: lastRewardBlock,
            accRacoonPerShare: 0,
            depositFeeBP: _depositFeeBP
        }));
    }

    // Update the given pool's Racoon allocation point and deposit fee. Can only be called by the owner.
    function set(uint256 _pid, uint256 _allocPoint, uint16 _depositFeeBP, bool _withUpdate) public onlyOwner {
        require(_depositFeeBP <= 400, "set: invalid deposit fee basis points");
        if (_withUpdate) {
            massUpdatePools();
        }
        totalAllocPoint = totalAllocPoint.sub(poolInfo[_pid].allocPoint).add(_allocPoint);
        poolInfo[_pid].allocPoint = _allocPoint;
        poolInfo[_pid].depositFeeBP = _depositFeeBP;
    }

    // Return reward multiplier over the given _from to _to block.
    function getMultiplier(uint256 _from, uint256 _to) public pure returns (uint256) {
        return _to.sub(_from).mul(BONUS_MULTIPLIER);
    }

    // View function to see pending Racoons on frontend.
    function pendingRacoon(uint256 _pid, address _user) external view returns (uint256) {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][_user];
        uint256 accRacoonPerShare = pool.accRacoonPerShare;
        uint256 lpSupply = pool.lpToken.balanceOf(address(this));
        if (block.number > pool.lastRewardBlock && lpSupply != 0) {
            uint256 multiplier = getMultiplier(pool.lastRewardBlock, block.number);
            uint256 racoonReward = multiplier.mul(racoonPerBlock).mul(pool.allocPoint).div(totalAllocPoint);
            accRacoonPerShare = accRacoonPerShare.add(racoonReward.mul(1e12).div(lpSupply));
        }
        return user.amount.mul(accRacoonPerShare).div(1e12).sub(user.rewardDebt);
    }

    // Update reward variables for all pools. Be careful of gas spending!
    function massUpdatePools() public {
        uint256 length = poolInfo.length;
        for (uint256 pid = 0; pid < length; ++pid) {
            updatePool(pid);
        }
    }

    // Update reward variables of the given pool to be up-to-date.
    function updatePool(uint256 _pid) public {
        PoolInfo storage pool = poolInfo[_pid];
        if (block.number <= pool.lastRewardBlock) {
            return;
        }
        uint256 lpSupply = pool.lpToken.balanceOf(address(this));
        if (lpSupply == 0 || pool.allocPoint == 0) {
            pool.lastRewardBlock = block.number;
            return;
        }
        uint256 multiplier = getMultiplier(pool.lastRewardBlock, block.number);
        uint256 racoonReward = multiplier.mul(racoonPerBlock).mul(pool.allocPoint).div(totalAllocPoint);
        racoon.mint(devAddress, racoonReward.div(10));
        racoon.mint(address(this), racoonReward);
        pool.accRacoonPerShare = pool.accRacoonPerShare.add(racoonReward.mul(1e12).div(lpSupply));
        pool.lastRewardBlock = block.number;
    }

    // Deposit LP tokens to MasterChef for Racoon allocation.
    // Take care of adding the RIGHT transfetrax of Racoon token!
    function deposit(uint256 _pid, uint256 _amount) public nonReentrant {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        updatePool(_pid);

        if (user.amount > 0) {
            uint256 pending = user.amount.mul(pool.accRacoonPerShare).div(1e12).sub(user.rewardDebt);
            if (pending > 0) {
                safeRacoonTransfer(msg.sender, pending);
            }
        }
        if (_amount > 0) {
            pool.lpToken.safeTransferFrom(address(msg.sender), address(this), _amount);
            if (address(pool.lpToken) == address(racoon)) {
                uint256 transferTax = _amount.mul(5).div(100);  // enter correct Transfertax of the reward Token here!
                _amount = _amount.sub(transferTax);
            }
            if (pool.depositFeeBP > 0) {
                uint256 depositFee = _amount.mul(pool.depositFeeBP).div(10000);
                pool.lpToken.safeTransfer(feeAddress, depositFee);
                user.amount = user.amount.add(_amount).sub(depositFee);
            } else {
                user.amount = user.amount.add(_amount);
            }
        }
        user.rewardDebt = user.amount.mul(pool.accRacoonPerShare).div(1e12);
        emit Deposit(msg.sender, _pid, _amount);
    }

    // Withdraw LP tokens from MasterChef.
    function withdraw(uint256 _pid, uint256 _amount) public nonReentrant {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        require(user.amount >= _amount, "withdraw: not good");
        updatePool(_pid);
        uint256 pending = user.amount.mul(pool.accRacoonPerShare).div(1e12).sub(user.rewardDebt);
        if (pending > 0) {
            safeRacoonTransfer(msg.sender, pending);
        }
        if (_amount > 0) {
            user.amount = user.amount.sub(_amount);
            pool.lpToken.safeTransfer(address(msg.sender), _amount);
        }
        user.rewardDebt = user.amount.mul(pool.accRacoonPerShare).div(1e12);
        emit Withdraw(msg.sender, _pid, _amount);
    }

    // Withdraw without caring about rewards. EMERGENCY ONLY.
    function emergencyWithdraw(uint256 _pid) public nonReentrant {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        uint256 amount = user.amount;
        user.amount = 0;
        user.rewardDebt = 0;
        pool.lpToken.safeTransfer(address(msg.sender), amount);
        emit EmergencyWithdraw(msg.sender, _pid, amount);
    }

    // Safe Racoon transfer function, just in case if rounding error causes pool to not have enough Racoons.
    function safeRacoonTransfer(address _to, uint256 _amount) internal {
        uint256 racoonBal = racoon.balanceOf(address(this));
        bool transferSuccess = false;
        if (_amount > racoonBal) {
            transferSuccess = racoon.transfer(_to, racoonBal);
        } else {
            transferSuccess = racoon.transfer(_to, _amount);
        }
        require(transferSuccess, "safeRacoonTransfer: Transfer failed");
    }


    // Reduce emission rate by 5% every 7200 blocks ~ 6hours. This function can be called publicly.
    function updateEmissionRate() public {
        require(block.number > startBlock, "updateEmissionRate: Can only be called after mining starts");
        require(racoonPerBlock > MINIMUM_EMISSION_RATE, "updateEmissionRate: Emission rate has reached the minimum threshold");

        uint256 currentIndex = block.number.sub(startBlock).div(EMISSION_REDUCTION_PERIOD_BLOCKS);
        if (currentIndex <= lastReductionPeriodIndex) {
            return;
        }

        uint256 newEmissionRate = racoonPerBlock;
        for (uint256 index = lastReductionPeriodIndex; index < currentIndex; ++index) {
            newEmissionRate = newEmissionRate.mul(1e4 - EMISSION_REDUCTION_RATE_PER_PERIOD).div(1e4);
        }

        newEmissionRate = newEmissionRate < MINIMUM_EMISSION_RATE ? MINIMUM_EMISSION_RATE : newEmissionRate;
        if (newEmissionRate >= racoonPerBlock) {
            return;
        }

        massUpdatePools();
        lastReductionPeriodIndex = currentIndex;
        uint256 previousEmissionRate = racoonPerBlock;
        racoonPerBlock = newEmissionRate;
        emit EmissionRateUpdated(msg.sender, previousEmissionRate, newEmissionRate);
    }

}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"contract PolyRacoon","name":"_racoon","type":"address"},{"internalType":"uint256","name":"_startBlock","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"uint256","name":"pid","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Deposit","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"uint256","name":"pid","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"EmergencyWithdraw","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"caller","type":"address"},{"indexed":false,"internalType":"uint256","name":"previousAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"newAmount","type":"uint256"}],"name":"EmissionRateUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"uint256","name":"pid","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Withdraw","type":"event"},{"inputs":[],"name":"BONUS_MULTIPLIER","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"EMISSION_REDUCTION_PERIOD_BLOCKS","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"EMISSION_REDUCTION_RATE_PER_PERIOD","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"INITIAL_EMISSION_RATE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MINIMUM_EMISSION_RATE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_allocPoint","type":"uint256"},{"internalType":"contract IBEP20","name":"_lpToken","type":"address"},{"internalType":"uint16","name":"_depositFeeBP","type":"uint16"},{"internalType":"bool","name":"_withUpdate","type":"bool"}],"name":"add","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"deposit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"devAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"}],"name":"emergencyWithdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"feeAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_from","type":"uint256"},{"internalType":"uint256","name":"_to","type":"uint256"}],"name":"getMultiplier","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"lastReductionPeriodIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"massUpdatePools","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"},{"internalType":"address","name":"_user","type":"address"}],"name":"pendingRacoon","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"poolInfo","outputs":[{"internalType":"contract IBEP20","name":"lpToken","type":"address"},{"internalType":"uint256","name":"allocPoint","type":"uint256"},{"internalType":"uint256","name":"lastRewardBlock","type":"uint256"},{"internalType":"uint256","name":"accRacoonPerShare","type":"uint256"},{"internalType":"uint16","name":"depositFeeBP","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"poolLength","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"racoon","outputs":[{"internalType":"contract PolyRacoon","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"racoonPerBlock","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"},{"internalType":"uint256","name":"_allocPoint","type":"uint256"},{"internalType":"uint16","name":"_depositFeeBP","type":"uint16"},{"internalType":"bool","name":"_withUpdate","type":"bool"}],"name":"set","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"startBlock","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalAllocPoint","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"updateEmissionRate","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"}],"name":"updatePool","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"address","name":"","type":"address"}],"name":"userInfo","outputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"rewardDebt","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

000000000000000000000000c07f279830aafa63e25c87227b45e426e84e6db20000000000000000000000000000000000000000000000000000000000fb446a

-----Decoded View---------------
Arg [0] : _racoon (address): 0xc07f279830aafa63e25c87227b45e426e84e6db2
Arg [1] : _startBlock (uint256): 16467050

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000c07f279830aafa63e25c87227b45e426e84e6db2
Arg [1] : 0000000000000000000000000000000000000000000000000000000000fb446a


Deployed ByteCode Sourcemap

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Swarm Source

ipfs://c20a6d39c5a475670c94819bd39e3adcc669712449f651263af000400129e7de
Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Block Uncle Number Difficulty Gas Used Reward
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