// An example solution for the exercise: [AED001] Forty-Two

#include <iostream>

using namespace std;

int main() {

  int n;
  cin >> n;

  int count = 0;
  for (int i=0; i<n; i++) {
    int a;
    cin >> a;
    if (a == 42) count++;
  }

  cout << count << endl;
  
  return 0;
}