using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleEventForUser
{

    class Program
    {


        static void Main(string[] args)
        {
            Stack<int> stackData = new Stack<int>();
            FindEvent fe = new FindEvent();
            Sum findSum = new Sum();
            fe.onData += fe.EventForData(stackData);

        }
    }
    class FindEvent
    {
        public delegate void MethodContainer();

        public event MethodContainer onData;

        public void EventForData(Stack<int> num)
        {
            num.Push(int.Parse(Console.ReadLine()));
            if (num.Peek().GetTypeCode() == TypeCode.Int32)
            {
                onData();
            }
        }

    }
    class Sum
    {
        static void FindSum(Stack<int> num)
        {
            int sum = 0;
            for (int i = 0; i < num.Count(); i++)
            {
                sum += num.Pop();
            }
            Console.WriteLine("Сумма введенных числе = {0}", sum);

        }
    }
}