function Main(input) {
    const s = [...input.replace("\n", "")];
    const n = ["1st", "2nd", "3rd", "4th", "Alpha"];
    const c = ["Z", "B", "S", "E", "D"];
    console.log(n[c.indexOf(s[0])]);
}
Main(require("fs").readFileSync("/dev/stdin", "utf8"));