var reader = require ('readline').createInterface({
 input: process.stdin,
 output: process.stdout
});

var lines = []; 
reader.on('line', (line) => {
   lines.push(line) ;
});

reader.on ('close', () => {
  var A = lines[0]
  var S = lines[1]
  
      if (A >= 3200){
      	console.log(S);
}else if (A < 3200){
  console.log("red");
}
});