pragma solidity >=0.5.0 <0.5.13;
contract olymp_human{
    string name;
    bool have_a_passport;
    address contract_owner;
    constructor () public{
        have_a_passport = false;
        contract_owner = msg.sender;
    }
    function check_owner() public view returns (string memory){
        require(contract_owner == msg.sender);
        return "It's a owner";
    }
    function check_passport() public view returns (string memory){
        //Есть ли паспорт или нет
        require(have_a_passport == true);
        return "Have ID";
    }
    function setPassport(bool status) public{
        have_a_passport = status;
    }
}