/* -*- coding: utf-8 -*-
 *
 * 2714.cc:  No.2714 Amaou - yukicoder
 */

#include<cstdio>
#include<string>
#include<algorithm>
 
using namespace std;

/* constant */

const int K = 4;
const int KBITS = 1 << K;
const int MAX_L = 5;

const string ss[K] = { "akai", "marui", "okii", "umai" };

/* typedef */

/* global variables */

/* subroutines */

/* main */

int main() {
  int n;
  scanf("%d", &n);

  int cnt = 0;
  for (int i = 0; i < n; i++) {
    int bits = 0;
    for (int j = 0; j < K; j++) {
      char t[MAX_L + 4];
      scanf("%s", t);
      string sj(t);

      for (int k = 0; k < K; k++)
	if (sj == ss[k]) { bits |= (1 << k); break; }
    }

    if (bits == KBITS - 1) cnt++;
  }

  printf("%d\n", cnt);
  
  return 0;
}