using System;

namespace SimpleProblems
{
    class Program
    {
        static void Main(string[] args)
        {

            int numberInt = 0;
            try
            {
                while (true)
                {
                 var input = int.Parse(Console.ReadLine());
                 numberInt++;
                }

            }
            catch (FormatException)
            {
                Console.WriteLine(numberInt);
            }
        }
    }
}