// Page 082

import java.util.Scanner;
class Prog_6_9
{
	public static void main(String[] args)
	{
			Scanner input = new Scanner(System.in);
			String str;
			int count = 0;
			do
			{	str=input.next();

				count = count + 1;

			} while (input.hasNext());
			System.out.println("Number of word is: "+ count);
	}
}