using System;

public class Program

{

    public static void Main()

    {

        int  f , g;

    f = Convert.ToInt32(Console.ReadLine());

    g = Convert.ToInt32(Console.ReadLine());

    string d;

    d = Console.ReadLine();

    if (d == "+")

    {   

    Console.WriteLine(f + g);

    }   

else if (d == "-")  

{   

    Console.WriteLine(f - g);

    }   

else if (d == "*")  

{   

    Console.WriteLine(f * g);

    }   

else if (d == "/")  

{   

    Console.WriteLine(f / g);

    }   

    int l;

    l = Convert.ToInt32(Console.ReadLine());

    if (l == 12 || l == 1 || l == 2)

    {

    Console.WriteLine("zima");

    }

    else if (l >= 3 && l <= 5)

    {

    Console.WriteLine("vesna");

    }

    else if (l >= 6 && l <= 8)

    {   

    Console.WriteLine("leto");

    }

    else if (l >= 9 && l <= 11)

    {

        Console.WriteLine("osen");

    }

    }

}