using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApp9
{
    class Program
    {
        static void Main(string[] args)
        {

            int integers = 0;
            int counter = 0;
            try
            {
                while ((int) integers == (int) integers)
                {
                    integers = int.Parse(Console.ReadLine());
                    counter++;
                }
            } catch (Exception ex)
            {
                Console.WriteLine(counter);
            }        
		}
    }
}