// Page 126

import java.util.Scanner;
public class Prog_10_3
{
	public static void main(String[] args)
	{
		int length;
		length=getData();
		System.out.println("The array length is: " + length);
	}

	private static int getData()
	{
		Scanner input=new Scanner(System.in);
		int length = 0; 	// # of data in the file
		while (input.hasNext())
		{
			double[] myArr=new double[length+1];
			myArr[length] = input.nextDouble();
			length ++;
		}
		return length;
	}
}