#define _USE_MATH_DEFINES
#include  <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
#include <string>
#include<math.h>
#include<iomanip>
#include<stdio.h>
#include <stdlib.h>
#include<stdio.h>
#include <queue>
#include<map>
#include <sstream>
#include<set>
#include<stack>
#include<time.h>
#include <sys/types.h>
#include <tuple>


typedef long long int ll;
//#include<bits/stdc++.h>


using namespace std;



int main()
{

    int Q;
    Q = 1;
    cin >> Q;
    
    int ans = 0;
    
    while (Q--) {
        map <string, bool>mp;
        string t[4] = { "akai", "marui", "okii", "umai" };
        for (int i = 0; i < 4; i++) {
            string p;
            cin >> p;
            mp[p] = 1;
        }
        int c = 0;
        for (int i = 0; i < 4; i++) {
            c += mp[t[i]];
        }
        if (c == 4)ans++;


    }
    cout << ans << endl;
    return 0; 
}