#include <iostream>
#include <set>
#include <string>
using namespace std;

int main() {
    int N;
    cin >> N;
    set<string> amaou = {"akai", "marui", "okii", "umai"};
    int count = 0;
    for (int i = 0; i < N; ++i) {
        set<string> s;
        string x;
        for (int j = 0; j < 4; ++j) {
            cin >> x;
            s.insert(x);
        }
        if (s == amaou)
            count++;
    }
    cout << count << endl;
    return 0;
}