using System;
namespace znanja
{
class Program
{
static void Main(string[] args)
{
int num = int.Parse(Console.ReadLine());
int[] array = new int[num];
array = Array.ConvertAll(Console.ReadLine().Split(' ', StringSplitOptions.RemoveEmptyEntries), int.Parse);
int count = 0;
for (int i = 0; i < num; i++)
{
if (array[i] > 0) count++;
}
Console.WriteLine(count);
}
}
}
var a, b, c:int64;
begin
read(a);
read(b);
read(c);
if (a<>b) and (a<>c) and (b<>c) then write('Chisla razlichni')
else write('Chisla ne razlichni');
end.