import java.util.Scanner;

import static java.lang.Math.*;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);

		int n = sc.nextInt(), ans = 0;
		for (int i = 0; i < n; i++)
		{
		    int x = sc.nextInt();
		    if (x > 0)
		        ans++;
		}

		System.out.println(ans);
	}
}