import java.math.BigInteger
import java.util.*

fun main(vararg args: String) {
    val a = input<Int>()
    val s = input<String>()
    println(if(a >= 3200) s else "red")
}

val sc = Scanner(System.`in`)
inline fun <reified T> input(): T = sc.next()?.apply {
    when(T::class) {
        Int::class -> toInt()
        Long::class -> toLong()
        Double::class -> toDouble()
        Float::class -> toFloat()
        Boolean::class -> toBoolean()
    }
} as T

tailrec fun fact(n: BigInteger, ans: BigInteger = BigInteger.ONE): BigInteger {
    if(n.compareTo(BigInteger.ONE) < 1) return ans
    return fact(n.dec(), ans * n)
}

tailrec fun gcd(a: Int, b: Int): Int {
    if(b == 0) return a
    return gcd(b, a % b)
}

tailrec fun fib(n: BigInteger, a: BigInteger = BigInteger.ZERO, b: BigInteger = BigInteger.ONE): BigInteger {
    if(n == BigInteger.ONE) return a
    return fib(n.dec(), b, a + b)
}


public inline operator fun BigInteger.dec(): BigInteger = this.subtract(BigInteger.ONE)