'use strict'

const main = input => {
	const args = input.split('\n').map(arg => arg.split(' '))
	const a = parseInt(args[0][0], 10)
	const s = args[1][0]
	if (a >= 3200) console.log(s)
	else console.log('red')
}

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