#include<bits/stdc++.h>
using namespace std;
const int N=1e7+5;
int a[N];
int n,m,x=1;
int t;
int main ()
{
	scanf("%d",&t);
	while(t--){
		memset(a,0,sizeof(a));
		scanf("%d",&n);
		for(int i=1;i<=n;i++){
			scanf("%d",a+i);
		}
		scanf("%d",&m);
		for(int i=1,b;i<=m;i++){
			scanf("%d",&b);
			x+=b;
			x=x%n;
			if(x==0)
			{
				x=n;
			}
			//printf("!!x: %d\n",x);
		}
		//printf("ans:%d",x);
		printf("%d\n",a[x]);
	}
	return 0;
}

WA

求助各路神仙