包对!

#include<bits/stdc++.h>
using namespace std;
int n;
int main(){
	freopen("poker.in","r",stdin);
	freopen("poker.out","w",stdout);
	cin>>n;
	set<string> p;
	for(int i=1;i<=n;i++){
		string x;
		cin>>x;
		p.insert(x);
	}
	cout<<52-p.size();
	return 0;
}