#include <bits/stdc++.h>
//#include <graphics.h>
#define in_arr(n,A)             for(int i=0;i<n;i++)cin>>A[i];
#define IOS                     ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define out_arr(n,A)            for(int i=0;i<n;i++)cout<<A[i]<<" ";
#define in_(_)                  scanf("%i", &_)
#define ll_(_)                  scanf("%I64d", &_)
#define LINE                    printf("\n")
#define SPACE                   printf(" ")
#define pb                      push_back
#define F                       first
#define S                       second
#define YES                     printf("YES")
#define NO                      printf("NO")
#define wrong                   printf(-1)
#define pll                     pair <ll, ll>
#define pii                     pair <int, int>
typedef long long ll;

using namespace std;
int main()
{
    //IOS
    int T;
    in_(T);
    while(T--)
    {
        int x, n, gcd, a, b;
        in_(x);
        in_(n);
        in_(gcd);


        for(int i = 1, t; i < n ; i++)
        {
            in_(t);
            gcd = __gcd(t,gcd);
        }
        in_(a);
        in_(b);
        if(gcd == 1)
            YES, LINE;
        else
            NO, LINE;
    }
}