package pl.codegym.task.task04.task0416;
/*
Przejście przez ulicę na oślep
*/
import java.io.*;
import java.util.Scanner;
public class Solution {
public static void main(String[] args) throws Exception {
Scanner scanner = new Scanner(System.in);
double minute = scanner.nextDouble();
while(minute>=5){
minute-=5;
}
while(minute<5) {
if (minute >= 0 && minute < 3) {
System.out.println("zielone"); //green
System.exit(0);
}
if (minute >= 3 && minute < 4) {
System.out.println("żółte"); //yellow
System.exit(0);
}
if (minute >= 4 && minute < 5) {
System.out.println("czerwone"); //red
System.exit(0);
}
}
}
}