import java.util.Scanner;
 
public class Main
{
	public static void main (String[] args)
	{
		int s = 0;
		Scanner in = new Scanner(System.in);
 
		while (in.hasNextDouble())
		{
			double x = in.nextDouble();
			s += 1;
		}
		System.out.println(s);
	}
}