using System;

public class Program

{

    public static void Main()

    {

        Console.Write("Enter first numeric:");

        int numeric1 = Convert.ToInt32(Console.ReadLine());

        Console.Write("Enter second numeric:");

        int numeric2 = Convert.ToInt32(Console.ReadLine());

        Console.WriteLine("1 - adittion, 2 - substraction, 3 - multiplication, 4 - division");

        int choise = Convert.ToInt32(Console.ReadLine());

        if(choise == 1)

        {

            Console.WriteLine(numeric1 + numeric2);

        }

         {

            Console.WriteLine(numeric1 - numeric2);

         }

          {

            Console.WriteLine(numeric1 * numeric2);

          }

           {

            Console.WriteLine(numeric1 / numeric2);

           }

    }

}