#include <cstdio>

#include <cstring>

#include <algorithm>

using namespace std;

typedef long long LL;

const int N = 1e5+;

int ret[N],T,n,m;

int main(){

  scanf("%d",&T);

  while(T--){

    scanf("%d%d",&n,&m);

    LL sum=;

    for(int i=;i<=n;++i){

      LL x;scanf("%I64d",&x);

      sum+=x;

    }

    for(int i=;i<=m;++i){

      LL x;scanf("%I64d",&x);

      if(x>sum)printf("");

      else printf("");

    }

    printf("\n");

  }

  return ;

}