
import java.util.*

fun main(args: Array<String>) {
    val argList = Scanner(System.`in`)

    val a = argList.nextLine().toInt()
    val s = argList.nextLine()

    val e = RedOrNot()
    e.execute(a, s)

}

class RedOrNot {
    fun execute(a: Int, s: String) {
        if (a >= 3200) {
            println(s)
        } else {
            println("red")
        }
    }
}