using System;

public class Program

{

    public static void Main()

    {

        int x = int.Parse(Console.ReadLine());

        switch(x){

            case 3:

            case 4:

            case 5:

                Console.WriteLine("Пролет");

                break;

            case 6:

            case 7:

            case 8:

                Console.WriteLine("Лято");

                break;

            case 9:

            case 10:

            case 11:

                Console.WriteLine("Есен");

                break;

            case 12:

            case 1:

            case 2:

                Console.WriteLine("Зима");

                break;

            default: 

                Console.WriteLine("Грешка");

                break;

        }

    }

}