Denial.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.10;

import "openzeppelin-contracts/contracts/utils/math/SafeMath.sol";

contract Denial {
    using SafeMath for uint256;

    address public partner; // withdrawal partner - pay the gas, split the withdraw
    // Foundry: wrapped address in "payable" to avoid error
    address payable public constant owner = payable(address(0xA9E));
    uint256 timeLastWithdrawn;
    mapping(address => uint256) withdrawPartnerBalances; // keep track of partners balances

    function setWithdrawPartner(address _partner) public {
        partner = _partner;
    }

    // withdraw 1% to recipient and 1% to owner
    function withdraw() public {
        uint256 amountToSend = address(this).balance.div(100);
        // perform a call without checking return
        // The recipient can revert, the owner will still get their share
        partner.call{ value: amountToSend }("");
        owner.transfer(amountToSend);
        // keep track of last withdrawal time
        // Foundry: changed from "now" as it is deprecated
        timeLastWithdrawn = block.timestamp;
        withdrawPartnerBalances[partner] = withdrawPartnerBalances[partner].add(amountToSend);
    }

    // allow deposit of funds
    receive() external payable { }

    // convenience function
    function contractBalance() public view returns (uint256) {
        return address(this).balance;
    }
}