process.stdin.resume();
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 = Number(lines[0]);
  var s = lines[1];

  if(a < 3200){
    console.log('red')
  }else{
    console.log(s)
  }

});
