using System;

public class Program

{

    public static void Main()

    {

    Console.WriteLine("Vítaj v Kalkulačke");

    String a = Console.ReadLine();

    String plus = "+";

    String minus = "-";

    String delenie = ":";

    String nasobenie = "x";

    if (a.Contains(plus))

        {

        Console.WriteLine("plus");

        string[] rozdeleniep = a.Split(" + ");

        foreach (string cislo1 in rozdeleniep)

        Console.WriteLine(cislo1);

        }

    else if (a.Contains(minus))

        {

        Console.WriteLine("minus");

        }

    else if (a.Contains(delenie))

        {

        Console.WriteLine("delenie");

        }

    else if (a.Contains(nasobenie))

        {

        Console.WriteLine("nasobenie");

        }

    }

}