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

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n, z = 0; cin >> n;
    while(n--){
        bool b = false, c = false, d = false, e = false;
        for(int i = 0; i < 4; i++){
            string a; cin >> a;
            if(a == "akai") b = true;
            else if(a == "marui") c = true;
            else if(a == "okii") d = true;
            else if(a == "umai") e = true;
        }
        if(b && c && d && e) z++;
    }
    cout << z << '\n';
    return 0;
}