// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

contract SecretStorage {
    uint256 private decoy0 = 0xDEADBEEF;
    uint256 private decoy1 = 0xBADC0DE;
    uint256 private decoy2 = 0xABCDEF;
    uint256 private decoy3 = 0x123456;
    uint256 private decoy4 = 1337;
    bytes32 private redHerring = keccak256("This is not the flag");
    uint256 private decoy6 = 0xCAFEBABE;
    bytes32 private flag;   // SLOT 7

    address public solver;
    bool    public solved;

    constructor(bytes32 _flag) {
        flag = _flag;
    }

    function submitFlag(bytes32 _submitted) external {
        require(!solved, "Already solved");
        require(_submitted == flag, "Wrong flag!");
        solved = true;
        solver = msg.sender;
    }

    function isSolved() external view returns (bool) { return solved; }
}