using System;

public class Program

{

    public static void Main()

    {

        int num = 0;

        Console.Write("Input a message: ");

        string str = Console.ReadLine();

        Console.WriteLine();

        for (int i = 0 ;i < str.Length-1 ; i++ )

        {

            if( str[i] == ' ')

            {

                num++;

            }

       // Console.WriteLine("This message have {0} words ",num);

        }

        Console.WriteLine("This message have {0} words ",num+1);

    }

}