const readline = require('readline');

const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout
});

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