#include <iostream>
#include <string>
#include <string.h>
#include <map>
using namespace std;

int main()
{
	int n;
	while(cin>>n)
	{
		map<int,int>m;
		int temp;
		if(n==0)
			break;
		for(int i=0;i<n;i++)
		{
			cin>>temp;
			m[temp]++;
		}
		int gore;
		cin>>gore;
		if(m.find(gore)!=m.end())
			cout<<m[gore]<<endl;
		else
			cout<<0<<endl;
	}
	return 0;
}