// An example solution for the exercise: [AED000] this is not a problem!

#include <iostream>

using namespace std;

int main() {

  int q;
  cin >> q;

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

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