include

using namespace std;

int main() {

int n;
cin >> n;
int sum = 0;

for (int i = 0; i < n; i++) {

	int a;
	cin >> a;

	if (a >= 80 && a % 5 == 0 &&a % 10 != 0) {
		sum++;
	}
}

cout<< sum << endl;
return 0;

}