import java.io.PrintWriter

fun solve(out: PrintWriter): Boolean = with(out) {
    val a = readLine()!!.toInt()
    val s = if (a < 3200) "red" else readLine()!!
    println(s)

    return false
}

fun main(args: Array<String>) = with(PrintWriter(System.out)){
    while(solve(this));
    flush()
}