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

using ll = long long;
using llu = long long unsigned;

// メイン関数
int main() {
    int n;
    cin >> n;

    int ret = 0;
    for (int i=0; i<n; ++i) {
        map<string, int> data;
        for (int j=0; j<4; ++j) {
            string s;
            cin >> s;
            data[s]++;
        }
        if (data["akai"] == 0) { continue; }
        if (data["marui"] == 0) { continue; }
        if (data["okii"] == 0) { continue; }
        if (data["umai"] == 0) { continue; }
        ret++;
    }
    cout << ret << endl; return 0;
}