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

#define rep(i, l, r) for (int i = (int)(l); i<(int)(r); i++)
#define ll long long

int main() {
    int N; cin >> N;
    int cnt = 0;
    rep(i, 0, N) {
        vector<bool> ok(4, false);
        string S[4]; rep(i, 0, 4) cin >> S[i];
        rep(i, 0, 4) {
            if (S[i]=="akai") ok[0] = true;
            if (S[i]=="marui") ok[1] = true;
            if (S[i]=="okii") ok[2] = true;
            if (S[i]=="umai") ok[3] = true;
        }
        if (ok[0]+ok[1]+ok[2]+ok[3]==4) cnt++;
    }
    cout << cnt << endl;
}