import * as fs from 'fs';

//in
//
//out
//
const main = (inp: string) => {
    const a: number = parseInt(inp.split('\n')[0]);
    const s: string = inp.split('\n')[1];

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

};

main(fs.readFileSync('/dev/stdin', 'utf8').trim());