#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,i,a[110]={0},m,j=0;
	cin>>n;
	for(i=0;i<n;i++){
		cin>>a[i];
	}
	cin>>m;
	for(i=0;i<n;i++){
		if(a[i]=m){
			j=a[i];
		}
	}
	cout<<j;
}
/**************************************************************
	Problem: 1154
	User: huxuanchen
	Language: C++
	Result: Wrong Answer
****************************************************************/