buzzcoin_2024.sol

pragma solidity >= 0.5.0 < 0.6.0;

/*
 ________  ___  ___  ________  ________  ________  ________  ___  ________      
|\   __  \|\  \|\  \|\_____  \|\_____  \|\   ____\|\   __  \|\  \|\   ___  \    
\ \  \|\ /\ \  \\\  \\|___/  /|\|___/  /\ \  \___|\ \  \|\  \ \  \ \  \\ \  \   
 \ \   __  \ \  \\\  \   /  / /    /  / /\ \  \    \ \  \\\  \ \  \ \  \\ \  \  
  \ \  \|\  \ \  \\\  \ /  /_/__  /  /_/__\ \  \____\ \  \\\  \ \  \ \  \\ \  \ 
   \ \_______\ \_______\\________\\________\ \_______\ \_______\ \__\ \__\\ \__\
    \|_______|\|_______|\|_______|\|_______|\|_______|\|_______|\|__|\|__| \|__|
*/

contract Buzzcoin {
    mapping (address => bool) private p1;
    mapping (address => bool) private p2;
    mapping (address => bool) private p3;
    mapping (address => bool) private p4;
    mapping (address => bool) private p5;

    mapping (address => bool) private perm;
    address[82] private users;
    address owner;
    function () external payable {}
    function donate() external payable {}
    uint public mask;
    uint public logmask;
    constructor() public{
        owner = msg.sender;
        users = [0x1421350ab6660421d2EA4e423a52030c9A19010E,
0x0D2909b3fFA791257e22F5127dEd49e2ee09f7B8,
0x2A76f2a48982A34027661884B16DAb321A5C268D,
0x2af601f3C67FE2B3A561265C07407Cbc8B99D9c2,
0x59db7cABE067bC05c03f808EB369d066b7754e65,
0x5e489f2cA3300d5de81C2d0FeEE4E63078cdE54d,
0x17907F7462527800De43bEFd76b14b2735B1320E,
0xF4ecd62FD10E8fA79aEe688Cb21e7BB7f843e0B3,
0x93A14D2E28f9C352E45133b7ef3bB9E16418fB38,
0xd555E0C45C48c2b38B674CBc6DddF88140bC35a2,
0x9EeD447A7583882DB311f923e0Cd80788E04F7B8,
0x15D3F5032Ee8d70a0FBa32AdB609A6B9cf744C50,
0xa60e2c0ced3322b4170ED197d3A81e5Da7536c5c,
0x7fFE6bBFedef34E4faA8C165c143Bb93BE15C8D6,
0xD35B1d1210676f42096fea8560C2242245B88749,
0x5B9f0091F221738fBb081a8EA7C11615358191F6,
0x857b74780A639A13999b9736c5cB19AD15cF67a9,
0x319ad58C7119E4706Df105acf3015Ef11969Ce8F,
0xA48366294E007e6CaBF5Ef51e7908b5Cda86B649,
0x07349131b620c6b73EcF674b4Ad2b7e1703E2DA4,
0xc0D4669D916034F7bf7965Dc7Df967DB1b7Bc711,
0xB5ed0a50E01a27bEaB8d49d521B2F7F6BCbE7000,
0x52f7fDd5D35182f3553bbd74ED08DC1D628dFA4E,
0xE547ec9BEE4e6c10bf08F3CaeB0b8EA5C65C7D4a,
0xCa15814ec46EAc83b830F55d4eC2910d8ad1f131,
0x43B5fCeB9a97e41B3a906E6886ade6d1d6adADb7,
0x6b041cd044FCd676a2D1AFD8609eb8398E288280,
0xDE0A98283d5De6F1c076cBbabEEE0CbC14CE3385,
0xe5567d93687825aa3514C6Ab67bE778405F34Dc0,
0xd827b46f22aDC76ec3D8D5EF3Feb8ccdbeE1eb5C,
0x1a670964Fb080fAe2f626e5787bE26B7cAAD429b,
0xC78975304075b718afdaa206170C4E71C397caF4,
0xD18Ff98c2172bDdc221Dd789ae0fc5d45d5Cea0B,
0x8d88a3F6082865ff7ae0A10bF58d1618A5161652,
0x0484d8284fE40622B2F5B9cF009778fd954795B2,
0x17ce8932E45dc4fe6Ef573829d0D506b679e24F4,
0xe45F75C32D0eF49c815D4Dc7091FcC9Bb50f5381,
0x86339bDE5F7b2858d1B3599996b39C31fcaf10e4,
0xC5A6b24b55656b78E9c490934808DFC00aB55A35,
0x7d6F87EC611EDE0791fDd71EA876495E36982C20,
0x9f207558cB355619dA5b3bd208AD74D230d04719,
0x7CB70F67CF53388EB79A3b52615C10e049E12026,
0x9267e3Adc2B2cE2394eC1eF0f3f5E37Faa41fA69,
0x6a9B7db3C53D122d3C35C8886059aec48655338C,
0xA478228CEA754d45bCE062f5e7F080254A948880,
0x4489Bdf35ec1f6D1D1eD0139774227D3C3Df3B40,
0x683620c8b57F8a120aD603462e40aF0fbC32aD09,
0xC87539c0a52c8c27934122F2AD29E8E0b666603E,
0x2911F0797e2A84bCb8e38aae44f184e4E3796804,
0x18721a70bA6e10aeaaD01456eEaB4648D7e181F1,
0xB9B1f5b8E81518c93c3f36215F92296B9a8fB1EC,
0x4CB7f141CCB133d13A7A4D29b7B016a2A971dC7C,
0x481dEB9E5DD4E540aFc8647D803CCC09eB429a3E,
0x378B17EEf980975a3e6B49f65971AC9DA731D864,
0x133cC2b6609B5038E569731bBf51E511D062Cd8a,
0xE4854E944eadAa773912bE08903CFD8754b83dEe,
0x5baFa509aA9B48eE43f451dc3A758E26fb01D95e,
0xDE56d88b1CB731aB0396CfBC5E1e5E4363c1CB90,
0x5C51ccFEB1346EbC49bBdDF7E3B041dE59fA398c,
0x59fE8E2f700eD390B8a3144C00090910A7012d65,
0x9d00e06b65E7502F40865204425E18662E128647,
0x4Bb51fD0f871e4F7730765cAfADDA89e54Dd6d89,
0x3Ed1032075C6EeD83eaa1453225Dd6Fad01002f7,
0xddC7DfE7ABC4eb1143F7555d1F91A79ceFD66EF6,
0xA781afe2Dc3A6734e312d9F5f89C0e96b2B89Dc8,
0x5BD52E36bD2E424B5F682ffb5DF4EDa7138787B6,
0xc4C112B01D0B8ac00684487470f580C6837fa49a,
0x2F57CB11be2B4C951591b1eb5f670D7Df51A53fb,
0x1D95c52ec00fce1c4E86f56a26Df021D96451A90,
0x1b14AC53CA25a7F6Afab7d0815645Ce56865B93F,
0x15B3ee6BDF11a5910767Aa39a68d453088c1D90e,
0x89Cade7C952110568B08d98b0AE8F9e4Ce09F09d,
0x659eD00b2BcdB1825668cFcF68AF8490156430C3,
0xC7c94454b16A9Bd2EEd0f01acCc9dD7d41510248,
0x2e446030945980403363af52f4cC37D4f678D96C,
0xa0EEA13BfACc120b274F263a5EBF2a669Dd7E794,
0x2D2f70d4E000C0817c1c510BAfF3bF1200d0626B,
0x872789885B4f2ff4F698b2520879BB734D8dd185,
0x44b0A55737Dd3A2f379253D0c2119627Bcf97FC9,
0x1aB060FF08Fd9b640a58A6eD979d2DEA3Df7f6eA,
0xD045eB5A2F04421a301e1b47a7ee033F28755dE9,
0xbd2fA68FC3d153F8e626Bd1BC20D89d68Cf2e044];
        for(uint i = 0; i < users.length; i++){
            perm[users[i]] = true;
        }
        mask = 1;
        logmask = 0;
    }

    function problem1() external payable {
        assert(!p1[msg.sender]);
        assert(perm[msg.sender]);
        msg.sender.transfer(10 ether);
        p1[msg.sender] = true;
    }

    function problem2(uint nonce) external payable {
        assert(!p2[msg.sender]);
        assert(perm[msg.sender]);
        uint256 hash = uint256(keccak256(abi.encode(nonce,msg.sender)));
        uint256 temp = hash % mask;
        if(temp == 0) {
            msg.sender.transfer(30 ether);
            p2[msg.sender] = true;
            if(logmask < 34) {
                mask = mask<<1;
                logmask += 1;
            }
        }

    }
    
    mapping (address => uint) private last_block;
    function problem3() external payable {
        assert(!p3[msg.sender]);
        assert(perm[msg.sender]);
        assert(block.number != last_block[msg.sender]);
        uint dice = uint(keccak256(abi.encode(msg.sender,block.number,now))) %6;
        last_block[msg.sender] = block.number;
        if(dice == 0){
            msg.sender.transfer(10 ether);
            p3[msg.sender] = true;
        }
    }


    function problem4() external payable {
        assert(!p4[msg.sender]);
        assert(perm[msg.sender]);
        assert(msg.value == 3.14159265 ether);
        msg.sender.transfer(23.14159265 ether);
        p4[msg.sender] = true;
    }
    
    
    function problem5(uint nonce) external payable {
        assert(!p5[msg.sender]);
        assert(perm[msg.sender]);
        uint256 hash = uint256(keccak256(abi.encode(nonce)));
        uint256 expected = 0x3aa605294d0b8f06632ee9423e3fbf9f67644137832a719c8db1c45bb925f894;
        if(hash == expected){
            msg.sender.transfer(30 ether);
            p5[msg.sender] = true;
        }
    }
}