Crack.sol

pragma solidity ^0.4.21;

contract Crack {
    uint8 public answer;
    bytes32 answerHash = 0xdb81b4d58595fbbbb592d3661a34cdca14d7ab379441400cbfa1b78bc447c365;

    function Crack() public {
        for(uint8 i = 0; i <= 2000; i++) {
            if(keccak256(i) == answerHash) {
                answer = i;
                break;
            }
        }
    }
}