#include<iostream>
#include<string>
#include<map>
using namespace std;
map<string, int> m

int main(){
	int n, mm, ans=0;
	cin >> n;
	string s;
	for(int i=0;i<n;i++){
		cin >> s;
		m[s]++;
	}
	cin >> m;
	for(auto xx : m){
		if(m.second>=mm) ans++;
	}
	cout << ans;
}