#include <bits/stdc++.h> 
using namespace std;
using ll =long long;
#define all(v) v.begin(),v.end()
 #define rep(i,a,b) for(int i=a;i<b;i++)
#define rrep(i,a,b) for(int i=a;i>=b;i--)

ll INF=2e18;


int main() {
    ios::sync_with_stdio(false);
  cin.tie(0);

vector<string> a={"akai","marui","okii","umai"};

ll ans=0;

  ll N;cin>>N;
  for(ll i=0;i<N;i++) {
    set<string> S;
    for(ll j=0;j<4;j++) {
      string s;cin>>s;
      S.insert(s);
    }
    bool ok=true;
    for(ll j=0;j<4;j++) {
      if(!S.count(a[j])) ok=false;
    }

    if(ok) ans++;
  }

  cout<<ans<<endl;
}