import java.util.Scanner;

public class Solution {
    public static void main(String[] args) throws Exception {
        double t;
        Scanner scanner = new Scanner(System.in);
        System.out.println("Please enter number: ");
        t = scanner.nextDouble();
        for (int i = 0; i <= 60; i += 5) {
            if (t >= i && t < i + 3) System.out.println("зелёный");
            else if (t >= i + 3 && t < i + 4) System.out.println("жёлтый");
            else if (t >= i + 4 && t < i + 5) System.out.println("красный");
        }
    }
}