#include <iostream>
#include <cassert>
#include <set>

using namespace std;

int main() {
  int N; cin >> N;
  int ans = 0;
  for (int i = 0; i < N; i++) {
    set<string> st = {"akai", "marui", "okii", "umai"};
    for (int j = 0; j < 4; j++) {
      string S; cin >> S;
      st.erase(S);
    }
    ans += st.size() == 0;
  }
  cout << ans << endl;
  return 0;
}