#include <bits/stdc++.h>
using namespace std;

#define rep(i, n) for (int i = 0; i < (int)(n); i++)

int main() {
  int N;
  cin >> N;
  vector<vector<string>> S(N, vector<string> (4));
  rep(i, N) rep(j, 4)
    cin >> S[i][j];
  vector<string> moji = {"akai", "marui", "okii", "umai"};
  int amaou = 0;
  rep(i, N) {
    map<string, int> ichigo;
    rep(j, 4)
      ichigo[S[i][j]]++;
    bool ans = true;
    rep(j, 4)
      if (ichigo[moji[j]] != 1)
	ans = false;
    if (ans)
      amaou++;
  }
  cout << amaou << endl;
  return 0;
}