using System;

public class Program

{

    public static void Main()

    {

        int M , N;

        char x;

        Console.Write("Enter two numbers: ");

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

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

        Console.Write("Enter the operation: ");

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

        if(x=='+')

            Console.WriteLine(M+N);

        else if(x=='-')

            Console.WriteLine(M-N);

        else if(x=='*')

            Console.WriteLine(M*N);

        else if(x=='/')

            Console.WriteLine(M/N);

        else if(x=='%')

            Console.WriteLine(M/N);

        else

            Console.WriteLine("Error");

    }

}