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

int main(){
  int n;
  cin>>n;
  int ans=0;
  for(int i=0;i<n;++i){
    vector<string> s(4);
    cin>>s[0]>>s[1]>>s[2]>>s[3];
    sort(s.begin(),s.end());
    if(s==vector<string>{"akai","marui","okii","umai"}) ans++;
  }
  cout<<ans<<endl;
}