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

vector<string> v = {"akai", "marui", "okii", "umai"};

int main() {
    int n;
    cin >> n;
    vector<vector<string>> s(n, vector<string>(4));
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < 4; j++) {
            cin >> s[i][j];
        }
    }
    int ans = 0;
    for (int i = 0; i < n; i++) {
        vector<int> ok(4);
        for (int j = 0; j < 4; j++) {
            for (int k = 0; k < 4; k++) {
                if (s[i][j] == v[k]) {
                    ok[k] = 1;
                }
            }
        }
        if (accumulate(ok.begin(), ok.end(), 0) == 4) {
            ans++;
        }
    }
    cout << ans << endl;
}