'use strict'

const main = (INPUT) => {
  const input = INPUT.split('\n')
  const a = input[0]
  const s = input[1]
  if (a >= 3200) {
    console.log(s)
  } else {
    console.log('red')
  }
}

main(require('fs').readFileSync('/dev/stdin', 'utf8'))
