1975B.cpp

#include <bits/stdc++.h>
using namespace std;

#define rep(i, n) for (int i = 0; i < (n); i++)

int main()
{
    int t;
    cin >> t;
    while (t--)
    {
        int n;
        cin >> n;
        vector<long long> arr;
        rep(i, n)
        {
            long long x;
            cin >> x;
            arr.push_back(x);
        }
        sort(arr.begin(),arr.end());
        if(arr[0]==1) {
            cout<<"YES"<<endl;
            continue;
        }
        set<int> ind;
        long long next=-1;
        rep(i,n) {
            if(arr[i]%arr[0]==0) ind.insert(i);
            if(next==-1 && arr[i]%arr[0]!=0) next=arr[i];
            if(next!=-1) {
                if(arr[i]%next==0) ind.insert(i);
            }
        }
        int sum=0;
        for(int i:ind) {
            sum+=i;
        }
        if(sum==((n*(n-1))/2)) {
            cout<<"YES"<<endl;
        }else{
            cout<<"NO"<<endl;
        }

    }
}