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

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    
    set<string> S = {"akai","marui","okii","umai"};
    
    int N; cin >> N;
    int answer = 0;
    for(int i=0; i<N; i++){
        set<string> T;
        for(int k=0; k<4; k++){
            string s; cin >> s;
            T.insert(s);
        }
        if(T == S)answer++;
    }
    cout << answer << endl;
}