#include<iostream>
#include<vector>
using namespace std;

int main() {
	int N; cin >> N;
	vector<vector<string>> S(N, vector<string>(4));
	for (int i = 0; i < N; i++) {
		cin >> S[i][0] >> S[i][1] >> S[i][2] >> S[i][3];
	}
	int ans = N;
	for (int i = 0; i < N; i++) {
		vector<bool> used(4, false);
		for (int j = 0; j < 4; j++) {
			if (S[i][j] == "akai") {
				used[0] = true;
			}
			else if (S[i][j] == "marui") {
				used[1] = true;
			}
			else if (S[i][j] == "okii") {
				used[2] = true;
			}
			else if (S[i][j] == "umai") {
				used[3] = true;
			}
		}
		for (int j = 0; j < 4; j++) {
			if (!used[j]) {
				ans--;
				break;
			}
		}
	}
	cout << ans << endl;
	return 0;
}