#include<bits/stdc++.h>
using namespace std;
int main(){
	int a;
	cin>>a;
	string b[a][4];
	set<string>st;
	for(int i=0;i<a;i++)cin>>b[i][0]>>b[i][1]>>b[i][2]>>b[i][3];
	for(int i=0;i<a-3;i++){
		st.insert(b[i][0]+" "+b[i][1]+" "+b[i][2]+" "+b[i][3]+" "+
		b[i+1][0]+" "+b[i+1][1]+" "+b[i+1][2]+" "+b[i+1][3]+" "+
		b[i+2][0]+" "+b[i+2][1]+" "+b[i+2][2]+" "+b[i+2][3]+" "+
		b[i+3][0]+" "+b[i+3][1]+" "+b[i+3][2]+" "+b[i+3][3]);
	}
	cout<<st.size();
	return 0;
}