"use strict";
function lowerThanDateOnly(date1, date2) {
        var year1 = date1.getFullYear();
        var month1 = date1.getMonth() + 1;
        var day1 = date1.getDate();
 
        var year2 = date2.getFullYear();
        var month2= date2.getMonth() + 1;
        var day2 = date2.getDate();
 
        if (year1 == year2) {
            if (month1 == month2) {
                return day1 < day2;
            }
            else {
                return month1 < month2;
            }
        } else {
            return year1 < year2;
        }
    }
function Main(input) {
    let lines = input.split("\n")[0];
    console.log(lowerThanDateOnly(new Date(lines), new Date('2019/05/01')) ? "Heiset" : "TBD");
}

Main(require("fs").readFileSync("/dev/stdin", "utf8"));
