#include<bits/stdc++.h> using namespace std; int main() { int n, a, c = 0 ; cin >> n; for (int i = 1; i <= n; i++) { cin >> a; if (a % 10 - a / 1000 - a % 1000 / 100 - a % 1000 % 100 / 10 > 0) c++; } cout << c; return 0; }