Contract 0xcdc46a2393706b33ee22a1b8316b8348312212b2

 
Txn Hash Method
Block
From
To
Value [Txn Fee]
0x3d09c58a29f50049713ec7ebc77f4db61d80c8006e37b2ce0bcc755956179a92Exit117953172022-05-11 13:00:04144 days 23 hrs ago0x5ade889a20cfbabf704f1cb71b1b3aab2b93f5ea IN 0xcdc46a2393706b33ee22a1b8316b8348312212b20 ETH0.001578851754 ETH
0x1bb986bd2a2aabb33b2b412d3c1c94ceb69a16bc77dfb77733a30965658ce9ccExit117148202022-05-10 16:06:51145 days 20 hrs ago0xf66257823682ac8ee6a6082e844bdcfa368a10f6 IN 0xcdc46a2393706b33ee22a1b8316b8348312212b20 ETH0.000382437834 ETH
0xdfcdb0facc66d256b5cc34b8c1811d18cf7e307a09a53a38488de53eca80cb4dGet Reward116261162022-05-09 18:25:51146 days 18 hrs ago0x38ef0fafe442de4a1348b84f3a2ff19741b3c200 IN 0xcdc46a2393706b33ee22a1b8316b8348312212b20 ETH0.000279563701 ETH
0x9b5d72bcbcdc1f2a3654292a9e52036b44ded0538b089a3162b7c3cf84dbc012Exit116260932022-05-09 18:24:38146 days 18 hrs ago0x38ef0fafe442de4a1348b84f3a2ff19741b3c200 IN 0xcdc46a2393706b33ee22a1b8316b8348312212b20 ETH0.000368370409 ETH
0x69819965a99e63215d9bb1a5543ae283c4c4c62b25299a9f15e07dd8faaa44a6Exit114359652022-05-07 18:29:23148 days 17 hrs ago0x985c3e701e7cd13a1ff3e099f98698e75d52b432 IN 0xcdc46a2393706b33ee22a1b8316b8348312212b20 ETH0.00017710247 ETH
0x604155596789ab8796e7c504b54bad83b70248d4952cc3537708b5aa6f90be9fGet Reward114359422022-05-07 18:29:23148 days 17 hrs ago0x985c3e701e7cd13a1ff3e099f98698e75d52b432 IN 0xcdc46a2393706b33ee22a1b8316b8348312212b20 ETH0.000167275403 ETH
0x188efd5c862f0b1caa3c0b0df336f66052afd23d14bc2a5ff6664874caab3b32Exit113361232022-05-06 14:08:14149 days 22 hrs ago0x0d55757e68fb363392745e1ec8b3074316cef775 IN 0xcdc46a2393706b33ee22a1b8316b8348312212b20 ETH0.00024508552 ETH
0x5aff184dfa4a901d4db8385482075d6702c87cdeca5047a79317d8930f8a814cStake112620982022-05-05 15:57:40150 days 20 hrs ago0x38ef0fafe442de4a1348b84f3a2ff19741b3c200 IN 0xcdc46a2393706b33ee22a1b8316b8348312212b20 ETH0.000332895766 ETH
0xc713f5114625ac2dcc4c01f68fb765cb5620b0e1450b6f89c3f482b4df47776fGet Reward112226872022-05-05 4:54:29151 days 7 hrs ago0x0d55757e68fb363392745e1ec8b3074316cef775 IN 0xcdc46a2393706b33ee22a1b8316b8348312212b20 ETH0.000262694368 ETH
0x14e16af00bbba2f81703cf5c1b0d1b4138db82e20e603588a08ed9ec19e0fe70Get Reward110540332022-05-02 19:28:55153 days 17 hrs ago0x5ade889a20cfbabf704f1cb71b1b3aab2b93f5ea IN 0xcdc46a2393706b33ee22a1b8316b8348312212b20 ETH0.000371975278 ETH
0x7873ec76904324098d0084622d2613217135be1e287874438dc402798c18832bWithdraw110539962022-05-02 19:28:43153 days 17 hrs ago0x5ade889a20cfbabf704f1cb71b1b3aab2b93f5ea IN 0xcdc46a2393706b33ee22a1b8316b8348312212b20 ETH0.000449453211 ETH
0x8edbdf2b1d67297d475bc070e3d4e8a4f820126f8b03e9f85450ea66f0b28088Get Reward110226262022-05-02 10:24:05154 days 2 hrs ago0xf66257823682ac8ee6a6082e844bdcfa368a10f6 IN 0xcdc46a2393706b33ee22a1b8316b8348312212b20 ETH0.000340090357 ETH
0x3df497999f4c679c8d73847d778ff297899c945460c3aa3fab24da0252d6601cGet Reward109724882022-05-01 14:04:10154 days 22 hrs ago0x985c3e701e7cd13a1ff3e099f98698e75d52b432 IN 0xcdc46a2393706b33ee22a1b8316b8348312212b20 ETH0.000756890686 ETH
0xe97f6eacdc461ad4e328c37939b96f0768d9c6b5e899784878af167233a5d897Get Reward107016972022-04-28 2:04:03158 days 10 hrs ago0x0d55757e68fb363392745e1ec8b3074316cef775 IN 0xcdc46a2393706b33ee22a1b8316b8348312212b20 ETH0.00021630133 ETH
0x41a04ffea6af288ee1c5bb856dd536cba118b76f90a0e794cbe9343a849bafdfGet Reward106815672022-04-27 17:58:48158 days 18 hrs ago0x5ade889a20cfbabf704f1cb71b1b3aab2b93f5ea IN 0xcdc46a2393706b33ee22a1b8316b8348312212b20 ETH0.000227297216 ETH
0x915db17e1812ab16cfc9984abe48676ed8189a9917c5a994591c7cfeeee232beGet Reward104889102022-04-25 1:39:34161 days 10 hrs ago0x985c3e701e7cd13a1ff3e099f98698e75d52b432 IN 0xcdc46a2393706b33ee22a1b8316b8348312212b20 ETH0.000179066329 ETH
0xf54dfaab06c125505375490c69539e15e50fa5f2edfdb9a999bb734f1322decbGet Reward104309712022-04-24 2:00:40162 days 10 hrs ago0x0d55757e68fb363392745e1ec8b3074316cef775 IN 0xcdc46a2393706b33ee22a1b8316b8348312212b20 ETH0.000177178944 ETH
0x335b08d91bdfe1d431eaefe4f4b85f6c5fa6dd78e08017de43535a1f7ffe052eExit102705892022-04-21 16:27:49164 days 20 hrs ago0xc6302894cd030601d5e1f65c8f504c83d5361279 IN 0xcdc46a2393706b33ee22a1b8316b8348312212b20 ETH0.000311250027 ETH
0xfc83abc11963bcc385bf065e736a25248c52a8c9e1ce53bf7de274c9f9da7916Get Reward102704782022-04-21 16:26:00164 days 20 hrs ago0xc6302894cd030601d5e1f65c8f504c83d5361279 IN 0xcdc46a2393706b33ee22a1b8316b8348312212b20 ETH0.000264814059 ETH
0x8a49af8bb19f9c3ae99345268464bc6b97b9de9965fa10a0191d2a4fada8441bGet Reward101976902022-04-20 15:55:00165 days 20 hrs ago0xf66257823682ac8ee6a6082e844bdcfa368a10f6 IN 0xcdc46a2393706b33ee22a1b8316b8348312212b20 ETH0.000177798838 ETH
0x464d6753b7b8b025f30cd44015795902f60d3ec7820589c9240e82f74d2742afGet Reward100846262022-04-19 8:05:08167 days 4 hrs ago0x0d55757e68fb363392745e1ec8b3074316cef775 IN 0xcdc46a2393706b33ee22a1b8316b8348312212b20 ETH0.000149324041 ETH
0x8e03455f9dc0decddb2f16fb78c8ca3a3b39c4f8bb2726ff3dfe28530f482190Stake100172342022-04-18 8:19:13168 days 4 hrs ago0x5ade889a20cfbabf704f1cb71b1b3aab2b93f5ea IN 0xcdc46a2393706b33ee22a1b8316b8348312212b20 ETH0.000179455961 ETH
0xbc723c194724f59a0b51bf7b1364a6734e478bd5509140219a50ffbaa35fc3daGet Reward100052402022-04-18 3:55:35168 days 8 hrs ago0x985c3e701e7cd13a1ff3e099f98698e75d52b432 IN 0xcdc46a2393706b33ee22a1b8316b8348312212b20 ETH0.000148158416 ETH
0x8b3284083a829c571b8ce040d83ce88bfe969f553443242b78e00807b5968b25Stake98867912022-04-16 1:07:08170 days 11 hrs ago0x0d55757e68fb363392745e1ec8b3074316cef775 IN 0xcdc46a2393706b33ee22a1b8316b8348312212b20 ETH0.000227843262 ETH
0x1f892e07fd561be8bfa226b927f59c30e04f048759b1204f629b8752aef76c1bStake98011232022-04-14 16:16:54171 days 20 hrs ago0xc6302894cd030601d5e1f65c8f504c83d5361279 IN 0xcdc46a2393706b33ee22a1b8316b8348312212b20 ETH0.000228394618 ETH
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Latest 25 internal transaction
Parent Txn Hash Block From To Value
0x3d09c58a29f50049713ec7ebc77f4db61d80c8006e37b2ce0bcc755956179a92117953172022-05-11 13:00:04144 days 23 hrs ago 0xcdc46a2393706b33ee22a1b8316b8348312212b2 0x3f770ac673856f105b586bb393d122721265ad460 ETH
0x3d09c58a29f50049713ec7ebc77f4db61d80c8006e37b2ce0bcc755956179a92117953172022-05-11 13:00:04144 days 23 hrs ago 0xcdc46a2393706b33ee22a1b8316b8348312212b2 0x09672362833d8f703d5395ef3252d4bfa51c15ca0 ETH
0x3d09c58a29f50049713ec7ebc77f4db61d80c8006e37b2ce0bcc755956179a92117953172022-05-11 13:00:04144 days 23 hrs ago 0xcdc46a2393706b33ee22a1b8316b8348312212b2 dForce: DF Token0 ETH
0x3d09c58a29f50049713ec7ebc77f4db61d80c8006e37b2ce0bcc755956179a92117953172022-05-11 13:00:04144 days 23 hrs ago 0xcdc46a2393706b33ee22a1b8316b8348312212b20x2ce5fd6f6f4a159987eac99ff5158b7b62189acf0 ETH
0x1bb986bd2a2aabb33b2b412d3c1c94ceb69a16bc77dfb77733a30965658ce9cc117148202022-05-10 16:06:51145 days 20 hrs ago 0xcdc46a2393706b33ee22a1b8316b8348312212b2 0x3f770ac673856f105b586bb393d122721265ad460 ETH
0x1bb986bd2a2aabb33b2b412d3c1c94ceb69a16bc77dfb77733a30965658ce9cc117148202022-05-10 16:06:51145 days 20 hrs ago 0xcdc46a2393706b33ee22a1b8316b8348312212b2 0x09672362833d8f703d5395ef3252d4bfa51c15ca0 ETH
0x1bb986bd2a2aabb33b2b412d3c1c94ceb69a16bc77dfb77733a30965658ce9cc117148202022-05-10 16:06:51145 days 20 hrs ago 0xcdc46a2393706b33ee22a1b8316b8348312212b2 dForce: DF Token0 ETH
0x1bb986bd2a2aabb33b2b412d3c1c94ceb69a16bc77dfb77733a30965658ce9cc117148202022-05-10 16:06:51145 days 20 hrs ago 0xcdc46a2393706b33ee22a1b8316b8348312212b20x2ce5fd6f6f4a159987eac99ff5158b7b62189acf0 ETH
0x9b5d72bcbcdc1f2a3654292a9e52036b44ded0538b089a3162b7c3cf84dbc012116260932022-05-09 18:24:38146 days 18 hrs ago 0xcdc46a2393706b33ee22a1b8316b8348312212b2 0x3f770ac673856f105b586bb393d122721265ad460 ETH
0x9b5d72bcbcdc1f2a3654292a9e52036b44ded0538b089a3162b7c3cf84dbc012116260932022-05-09 18:24:38146 days 18 hrs ago 0xcdc46a2393706b33ee22a1b8316b8348312212b2 0x09672362833d8f703d5395ef3252d4bfa51c15ca0 ETH
0x9b5d72bcbcdc1f2a3654292a9e52036b44ded0538b089a3162b7c3cf84dbc012116260932022-05-09 18:24:38146 days 18 hrs ago 0xcdc46a2393706b33ee22a1b8316b8348312212b2 dForce: DF Token0 ETH
0x9b5d72bcbcdc1f2a3654292a9e52036b44ded0538b089a3162b7c3cf84dbc012116260932022-05-09 18:24:38146 days 18 hrs ago 0xcdc46a2393706b33ee22a1b8316b8348312212b20x2ce5fd6f6f4a159987eac99ff5158b7b62189acf0 ETH
0x69819965a99e63215d9bb1a5543ae283c4c4c62b25299a9f15e07dd8faaa44a6114359652022-05-07 18:29:23148 days 17 hrs ago 0xcdc46a2393706b33ee22a1b8316b8348312212b2 0x09672362833d8f703d5395ef3252d4bfa51c15ca0 ETH
0x69819965a99e63215d9bb1a5543ae283c4c4c62b25299a9f15e07dd8faaa44a6114359652022-05-07 18:29:23148 days 17 hrs ago 0xcdc46a2393706b33ee22a1b8316b8348312212b20x2ce5fd6f6f4a159987eac99ff5158b7b62189acf0 ETH
0x604155596789ab8796e7c504b54bad83b70248d4952cc3537708b5aa6f90be9f114359422022-05-07 18:29:23148 days 17 hrs ago 0xcdc46a2393706b33ee22a1b8316b8348312212b2 0x3f770ac673856f105b586bb393d122721265ad460 ETH
0x604155596789ab8796e7c504b54bad83b70248d4952cc3537708b5aa6f90be9f114359422022-05-07 18:29:23148 days 17 hrs ago 0xcdc46a2393706b33ee22a1b8316b8348312212b2 dForce: DF Token0 ETH
0x188efd5c862f0b1caa3c0b0df336f66052afd23d14bc2a5ff6664874caab3b32113361232022-05-06 14:08:14149 days 22 hrs ago 0xcdc46a2393706b33ee22a1b8316b8348312212b2 0x3f770ac673856f105b586bb393d122721265ad460 ETH
0x188efd5c862f0b1caa3c0b0df336f66052afd23d14bc2a5ff6664874caab3b32113361232022-05-06 14:08:14149 days 22 hrs ago 0xcdc46a2393706b33ee22a1b8316b8348312212b2 0x09672362833d8f703d5395ef3252d4bfa51c15ca0 ETH
0x188efd5c862f0b1caa3c0b0df336f66052afd23d14bc2a5ff6664874caab3b32113361232022-05-06 14:08:14149 days 22 hrs ago 0xcdc46a2393706b33ee22a1b8316b8348312212b2 dForce: DF Token0 ETH
0x188efd5c862f0b1caa3c0b0df336f66052afd23d14bc2a5ff6664874caab3b32113361232022-05-06 14:08:14149 days 22 hrs ago 0xcdc46a2393706b33ee22a1b8316b8348312212b20x2ce5fd6f6f4a159987eac99ff5158b7b62189acf0 ETH
0x9a4ee1a45ad9ac6f28b1b05988abe5c2610c9886542c28437c9596b0bfcdfbfe113191062022-05-06 10:43:07150 days 1 hr ago 0xc0dc7c5057141c9065bd9bedf79fd4e9ea69a7390xcdc46a2393706b33ee22a1b8316b8348312212b20 ETH
0x5aff184dfa4a901d4db8385482075d6702c87cdeca5047a79317d8930f8a814c112620982022-05-05 15:57:40150 days 20 hrs ago 0xcdc46a2393706b33ee22a1b8316b8348312212b2 0x09672362833d8f703d5395ef3252d4bfa51c15ca0 ETH
0x5aff184dfa4a901d4db8385482075d6702c87cdeca5047a79317d8930f8a814c112620982022-05-05 15:57:40150 days 20 hrs ago 0xcdc46a2393706b33ee22a1b8316b8348312212b20x2ce5fd6f6f4a159987eac99ff5158b7b62189acf0 ETH
0xc713f5114625ac2dcc4c01f68fb765cb5620b0e1450b6f89c3f482b4df47776f112226872022-05-05 4:54:29151 days 7 hrs ago 0xcdc46a2393706b33ee22a1b8316b8348312212b2 0x3f770ac673856f105b586bb393d122721265ad460 ETH
0xc713f5114625ac2dcc4c01f68fb765cb5620b0e1450b6f89c3f482b4df47776f112226872022-05-05 4:54:29151 days 7 hrs ago 0xcdc46a2393706b33ee22a1b8316b8348312212b2 dForce: DF Token0 ETH
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Similar Match Source Code
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0xd0BaA984Cd2D25A555710B4f199e873Af668866a

Contract Name:
StakingPool

Compiler Version
v0.6.12+commit.27d51765

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 9 : StakingPool.sol
//SPDX-License-Identifier: MIT
pragma solidity 0.6.12;

import "@openzeppelin/contracts/math/Math.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol";
import "@openzeppelin/contracts/utils/EnumerableSet.sol";

import "./Ownable.sol";
import "./LPTokenWrapper.sol";

contract StakingPool is Ownable, LPTokenWrapper {
  using SafeERC20 for IERC20;

  IERC20 public rewardToken;

  uint256 public rewardRate = 0;
  uint256 public startTime;
  uint256 public lastUpdateTime;
  uint256 public rewardPerTokenStored;

  uint256 public lastRateUpdateTime;
  uint256 public rewardDistributedStored;

  mapping(address => uint256) public userRewardPerTokenPaid;
  mapping(address => uint256) public rewards;

  event RewardRateUpdated(uint256 oldRewardRate, uint256 newRewardRate);
  event Staked(address indexed user, uint256 amount);
  event Withdrawn(address indexed user, uint256 amount);
  event RewardPaid(address indexed user, uint256 reward);

  constructor(
    address _lp,
    address _rewardToken,
    uint256 _startTime
  ) public {
    __Ownable_init();
    uni_lp = IERC20(_lp);
    rewardToken = IERC20(_rewardToken);
    startTime = _startTime;
  }

  modifier updateReward(address _account) {
    rewardPerTokenStored = rewardPerToken();
    lastUpdateTime = block.timestamp;
    if (_account != address(0)) {
      rewards[_account] = earned(_account);
      userRewardPerTokenPaid[_account] = rewardPerTokenStored;
    }
    _;
  }

  modifier updateRewardDistributed() {
    rewardDistributedStored = rewardDistributed();
    lastRateUpdateTime = block.timestamp;
    _;
  }

  function rewardPerToken() public view returns (uint256) {
    uint256 _lastTimeApplicable = Math.max(startTime, lastUpdateTime);

    if (totalSupply() == 0 || block.timestamp < _lastTimeApplicable) {
      return rewardPerTokenStored;
    }

    return
      rewardPerTokenStored.add(
        block.timestamp.sub(_lastTimeApplicable).mul(rewardRate).mul(1e18).div(
          totalSupply()
        )
      );
  }

  function rewardDistributed() public view returns (uint256) {
    // Have not started yet
    if (block.timestamp < startTime) {
      return rewardDistributedStored;
    }

    return
      rewardDistributedStored.add(
        block.timestamp.sub(Math.max(startTime, lastRateUpdateTime)).mul(
          rewardRate
        )
      );
  }

  function earned(address _account) public view returns (uint256) {
    return
      balanceOf(_account)
        .mul(rewardPerToken().sub(userRewardPerTokenPaid[_account]))
        .div(1e18)
        .add(rewards[_account]);
  }

  // stake visibility is public as overriding LPTokenWrapper's stake() function
  function stake(uint256 _amount) public override updateReward(msg.sender) {
    require(_amount > 0, "Cannot stake 0");
    super.stake(_amount);
    emit Staked(msg.sender, _amount);
  }

  function withdraw(uint256 _amount) public override updateReward(msg.sender) {
    require(_amount > 0, "Cannot withdraw 0");
    super.withdraw(_amount);
    emit Withdrawn(msg.sender, _amount);
  }

  function exit() external {
    withdraw(balanceOf(msg.sender));
    getReward();
  }

  function getReward() public updateReward(msg.sender) {
    uint256 _reward = rewards[msg.sender];
    if (_reward > 0) {
      rewards[msg.sender] = 0;
      rewardToken.safeTransferFrom(owner, msg.sender, _reward);
      emit RewardPaid(msg.sender, _reward);
    }
  }

  function setRewardRate(uint256 _rewardRate)
    external
    onlyOwner
    updateRewardDistributed
    updateReward(address(0))
  {
    uint256 _oldRewardRate = rewardRate;
    rewardRate = _rewardRate;

    emit RewardRateUpdated(_oldRewardRate, _rewardRate);
  }

  // This function allows governance to take unsupported tokens out of the
  // contract, since this one exists longer than the other pools.
  // This is in an effort to make someone whole, should they seriously
  // mess up. There is no guarantee governance will vote to return these.
  // It also allows for removal of airdropped tokens.
  function rescueTokens(
    IERC20 _token,
    uint256 _amount,
    address _to
  ) external onlyOwner {
    // cant take staked asset
    require(_token != uni_lp, "uni_lp");

    // transfer _to
    _token.safeTransfer(_to, _amount);
  }
}

File 2 of 9 : Math.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a >= b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow, so we distribute
        return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2);
    }
}

File 3 of 9 : IERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @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 4 of 9 : SafeERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "./IERC20.sol";
import "../../math/SafeMath.sol";
import "../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 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 SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using SafeMath for uint256;
    using Address for address;

    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(IERC20 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
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(IERC20 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),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(IERC20 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(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: 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(IERC20 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, "SafeERC20: low-level call failed");
        if (returndata.length > 0) { // Return data is optional
            // solhint-disable-next-line max-line-length
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

File 5 of 9 : EnumerableSet.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Library for managing
 * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
 * types.
 *
 * Sets have the following properties:
 *
 * - Elements are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Elements are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```
 * contract Example {
 *     // Add the library methods
 *     using EnumerableSet for EnumerableSet.AddressSet;
 *
 *     // Declare a set state variable
 *     EnumerableSet.AddressSet private mySet;
 * }
 * ```
 *
 * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
 * and `uint256` (`UintSet`) are supported.
 */
library EnumerableSet {
    // To implement this library for multiple types with as little code
    // repetition as possible, we write it in terms of a generic Set type with
    // bytes32 values.
    // The Set implementation uses private functions, and user-facing
    // implementations (such as AddressSet) are just wrappers around the
    // underlying Set.
    // This means that we can only create new EnumerableSets for types that fit
    // in bytes32.

    struct Set {
        // Storage of set values
        bytes32[] _values;

        // Position of the value in the `values` array, plus 1 because index 0
        // means a value is not in the set.
        mapping (bytes32 => uint256) _indexes;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function _add(Set storage set, bytes32 value) private returns (bool) {
        if (!_contains(set, value)) {
            set._values.push(value);
            // The value is stored at length-1, but we add 1 to all indexes
            // and use 0 as a sentinel value
            set._indexes[value] = set._values.length;
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function _remove(Set storage set, bytes32 value) private returns (bool) {
        // We read and store the value's index to prevent multiple reads from the same storage slot
        uint256 valueIndex = set._indexes[value];

        if (valueIndex != 0) { // Equivalent to contains(set, value)
            // To delete an element from the _values array in O(1), we swap the element to delete with the last one in
            // the array, and then remove the last element (sometimes called as 'swap and pop').
            // This modifies the order of the array, as noted in {at}.

            uint256 toDeleteIndex = valueIndex - 1;
            uint256 lastIndex = set._values.length - 1;

            // When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs
            // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.

            bytes32 lastvalue = set._values[lastIndex];

            // Move the last value to the index where the value to delete is
            set._values[toDeleteIndex] = lastvalue;
            // Update the index for the moved value
            set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based

            // Delete the slot where the moved value was stored
            set._values.pop();

            // Delete the index for the deleted slot
            delete set._indexes[value];

            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function _contains(Set storage set, bytes32 value) private view returns (bool) {
        return set._indexes[value] != 0;
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function _length(Set storage set) private view returns (uint256) {
        return set._values.length;
    }

   /**
    * @dev Returns the value stored at position `index` in the set. O(1).
    *
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function _at(Set storage set, uint256 index) private view returns (bytes32) {
        require(set._values.length > index, "EnumerableSet: index out of bounds");
        return set._values[index];
    }

    // Bytes32Set

    struct Bytes32Set {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _add(set._inner, value);
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _remove(set._inner, value);
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
        return _contains(set._inner, value);
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(Bytes32Set storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

   /**
    * @dev Returns the value stored at position `index` in the set. O(1).
    *
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
        return _at(set._inner, index);
    }

    // AddressSet

    struct AddressSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(AddressSet storage set, address value) internal returns (bool) {
        return _add(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(AddressSet storage set, address value) internal returns (bool) {
        return _remove(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(AddressSet storage set, address value) internal view returns (bool) {
        return _contains(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(AddressSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

   /**
    * @dev Returns the value stored at position `index` in the set. O(1).
    *
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function at(AddressSet storage set, uint256 index) internal view returns (address) {
        return address(uint160(uint256(_at(set._inner, index))));
    }


    // UintSet

    struct UintSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(UintSet storage set, uint256 value) internal returns (bool) {
        return _add(set._inner, bytes32(value));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(UintSet storage set, uint256 value) internal returns (bool) {
        return _remove(set._inner, bytes32(value));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(UintSet storage set, uint256 value) internal view returns (bool) {
        return _contains(set._inner, bytes32(value));
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function length(UintSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

   /**
    * @dev Returns the value stored at position `index` in the set. O(1).
    *
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function at(UintSet storage set, uint256 index) internal view returns (uint256) {
        return uint256(_at(set._inner, index));
    }
}

File 6 of 9 : Ownable.sol
//SPDX-License-Identifier: MIT
pragma solidity 0.6.12;

/**
 * @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 {_setPendingOwner} and {_acceptOwner}.
 */
contract Ownable {
    /**
     * @dev Returns the address of the current owner.
     */
    address payable public owner;

    /**
     * @dev Returns the address of the current pending owner.
     */
    address payable public pendingOwner;

    event NewOwner(address indexed previousOwner, address indexed newOwner);
    event NewPendingOwner(
        address indexed oldPendingOwner,
        address indexed newPendingOwner
    );

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    function __Ownable_init() internal {
        owner = msg.sender;
        emit NewOwner(address(0), msg.sender);
    }

    /**
     * @notice Base on the inputing parameter `newPendingOwner` to check the exact error reason.
     * @dev Transfer contract control to a new owner. The newPendingOwner must call `_acceptOwner` to finish the transfer.
     * @param newPendingOwner New pending owner.
     */
    function _setPendingOwner(address payable newPendingOwner)
        external
        onlyOwner
    {
        require(
            newPendingOwner != address(0) && newPendingOwner != pendingOwner,
            "_setPendingOwner: New owenr can not be zero address and owner has been set!"
        );

        // Gets current owner.
        address oldPendingOwner = pendingOwner;

        // Sets new pending owner.
        pendingOwner = newPendingOwner;

        emit NewPendingOwner(oldPendingOwner, newPendingOwner);
    }

    /**
     * @dev Accepts the admin rights, but only for pendingOwenr.
     */
    function _acceptOwner() external {
        require(
            msg.sender == pendingOwner,
            "_acceptOwner: Only for pending owner!"
        );

        // Gets current values for events.
        address oldOwner = owner;
        address oldPendingOwner = pendingOwner;

        // Set the new contract owner.
        owner = pendingOwner;

        // Clear the pendingOwner.
        pendingOwner = address(0);

        emit NewOwner(oldOwner, owner);
        emit NewPendingOwner(oldPendingOwner, pendingOwner);
    }

    uint256[50] private __gap;
}

File 7 of 9 : LPTokenWrapper.sol
//SPDX-License-Identifier: MIT
pragma solidity 0.6.12;

import "@openzeppelin/contracts/math/SafeMath.sol";
import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol";

contract LPTokenWrapper {
  using SafeMath for uint256;
  using SafeERC20 for IERC20;

  IERC20 public uni_lp;

  uint256 private _totalSupply;

  mapping(address => uint256) private _balances;

  function totalSupply() public view returns (uint256) {
    return _totalSupply;
  }

  function balanceOf(address account) public view returns (uint256) {
    return _balances[account];
  }

  function stake(uint256 amount) public virtual {
    _totalSupply = _totalSupply.add(amount);
    _balances[msg.sender] = _balances[msg.sender].add(amount);
    uni_lp.safeTransferFrom(msg.sender, address(this), amount);
  }

  function withdraw(uint256 amount) public virtual {
    _totalSupply = _totalSupply.sub(amount);
    _balances[msg.sender] = _balances[msg.sender].sub(amount);
    uni_lp.safeTransfer(msg.sender, amount);
  }
}

File 8 of 9 : 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, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        uint256 c = a + b;
        if (c < a) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b > a) return (false, 0);
        return (true, a - b);
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, 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 (true, 0);
        uint256 c = a * b;
        if (c / a != b) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a / b);
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a % b);
    }

    /**
     * @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) {
        require(b <= a, "SafeMath: subtraction overflow");
        return a - b;
    }

    /**
     * @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) {
        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, reverting 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) {
        require(b > 0, "SafeMath: division by zero");
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting 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) {
        require(b > 0, "SafeMath: modulo by zero");
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * 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);
        return a - b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryDiv}.
     *
     * 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);
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * 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 9 of 9 : Address.sol
// SPDX-License-Identifier: MIT

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);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(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);
            }
        }
    }
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract ABI

[{"inputs":[{"internalType":"address","name":"_lp","type":"address"},{"internalType":"address","name":"_rewardToken","type":"address"},{"internalType":"uint256","name":"_startTime","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"NewOwner","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"oldPendingOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newPendingOwner","type":"address"}],"name":"NewPendingOwner","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"reward","type":"uint256"}],"name":"RewardPaid","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"oldRewardRate","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"newRewardRate","type":"uint256"}],"name":"RewardRateUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Staked","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Withdrawn","type":"event"},{"inputs":[],"name":"_acceptOwner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address payable","name":"newPendingOwner","type":"address"}],"name":"_setPendingOwner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_account","type":"address"}],"name":"earned","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"exit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"getReward","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"lastRateUpdateTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lastUpdateTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address payable","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pendingOwner","outputs":[{"internalType":"address payable","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"_token","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"address","name":"_to","type":"address"}],"name":"rescueTokens","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"rewardDistributed","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardDistributedStored","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardPerToken","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardPerTokenStored","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardRate","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardToken","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"rewards","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_rewardRate","type":"uint256"}],"name":"setRewardRate","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"stake","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"startTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"uni_lp","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"userRewardPerTokenPaid","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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