process.stdin.setEncoding('utf8');
var lines = [];
var reader = require('readline').createInterface({
  input: process.stdin,
  output: process.stdout
});
reader.on('line', (line) => {
  lines.push(line);
});
reader.on('close', () => {
  var a = lines[0];
  var s = lines[1];

  if(a >= 32000) {
    console.log(s);
  } else {
    console.log('red');
  }
})