#include<bits/stdc++.h>

using namespace std;


int main(){
	int n;
	cin >> n;
	int ans = 0;
	while (n--) {
		int cnt1 = 0; 
		int cnt2 = 0;
		int cnt3 = 0;
		int cnt4 = 0;
		vector<string> s(4);
		for (int i = 0; i < 4; i++) {
			cin >> s[i];
		}
		for (int i = 0; i < 4; i++) {
			if (s[i] == "akai") {
				++cnt1;
			} else if (s[i] == "marui") {
				++cnt2;
			} else if (s[i] == "okii") {
				++cnt3;
			} else if (s[i] == "umai") {
				++cnt4;
			}
		}
		if (cnt1 == 1 && cnt2 == 1 && cnt3 == 1 && cnt4 == 1) {
			++ans;
		}
	}
	cout << ans << '\n';
	return 0;
}