'use strict';
 
process.stdin.resume();
process.stdin.setEncoding('utf-8');
 
let inputString = '';
let currentLine = 0;
 
process.stdin.on('data', function(inputStdin) {
    inputString += inputStdin;
});
 
process.stdin.on('end', function() {
    inputString = inputString.split('\n');
    main();
});
 
function readline() {
    return inputString[currentLine++];
}
 
 
// main function .... code start ... ///
function main() {
 
 //var input = readline()
 
var ar = readline().split(' ').map(x => parseInt(x));
var a = ar[0]
var str = readline().split(' ');
var s = str[0];
 
console.log(a >= 3200 ? s : 'red');
}