#include<bits/stdc++.h>
using namespace std;
int main(){
	int n;cin>>n;
	int ans=0;
	for(int i=0;i<n;i++){
		set<string>s={"akai","okii","marui","umai"};
		for(int j=0;j<4;j++){
			string t;cin>>t;
			s.erase(t);
		}
		if(s.empty())ans++;
	}
	cout<<ans<<endl;
}