"use strict"

const main = (input) => {
    const _input = input.split("\n");
    const a = _input[0];
    const s = _input[1];

    if(a >= 3200){
        console.log(s);
    } else {
        console.log("red");
    }

}

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