func readInts() -> [Int] {
    return readLine()!.split(separator: " ").map { Int($0)! }
}

func main() {
    let a = Int(readLine()!)!
    let s = readLine()!
    
    if a >= 3200 {
        print(s)
    } else {
        print("red")
    }
}

main()
