#include <bits/stdc++.h>

using namespace std;

int main()
{
    int n, a[100], b; 
    cin >> n;
    
    for (int i = 0; i < n; i ++)
    {
    	cin >> a[i];
    	
    	if (a[i] % 10 - a[i] / 10 % 10 - a[i] / 10 / 10 % 10 - a[i] / 10 / 10 / 10 % 10 > 0)
    	{
    		b += 1;
		}
    	
	}
	
	cout << b;
    
    return 0;
}