#include <bits/stdc++.h>

const std::string g[4] = {"akai", "marui", "okii", "umai"};

int main() {
  std::ios::sync_with_stdio(false);
  std::cin.tie(nullptr);

  int ans = 0;
  int N;
  std::cin >> N;

  for (int i = 0; i < N; i++) {
    std::map<std::string, bool> f;
    for (int j = 0; j < 4; j++) {
      std::string s;
      std::cin >> s;
      f[s] = 1;
    }
    int cnt = 0;
    for (int j = 0; j < 4; j++) {
      if (f[g[j]]) {
        cnt++;
      }
    }
    ans += cnt == 4;
  }

  std::cout << ans << '\n';
  return 0;  
}