public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader reader=new BufferedReader(new InputStreamReader(System.in));
float number = Float.parseFloat(reader.readLine());
for (int i=0;i<=11;i++)
{
if (number-5*i<=5&&number-5*i>=0) number-=5*i;
}
if (number<3||number==5) System.out.println("зелёный");
else if (number >=4&&number!=5) System.out.println("красный");
else System.out.println("жёлтый");
}package com.javarush.task.task04.task0416;
import java.io.BufferedReader;
import java.io.InputStreamReader;
/*
Переходим дорогу вслепую
*/
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader reader=new BufferedReader(new InputStreamReader(System.in));
float number = Float.parseFloat(reader.readLine());
for (int i=0;i<=11;i++)
{
if (number-5*i<=5&&number-5*i>=0) number-=5*i;
}
if (number<3||number==5) System.out.println("зелёный");
else if (number >=4&&number!=5) System.out.println("красный");
else System.out.println("жёлтый");
}
}