#include<iostream>
#include<cstdio>
#include<cstring>
#include<string>
#include<cmath>
#include<cstdlib>
#include<algorithm>
using namespace std;
#define LL long long
int tt,n,maxx;
LL sum;
int main()
{
    int x;
    scanf("%d",&tt);
    while(tt--)
    {
        sum=0,maxx=0;
        scanf("%d",&n);
        for(int i=1;i<=n;i++)
        {
            scanf("%d",&x);
            sum+=x;
            if(x>maxx)
                maxx=x;
        }
        if(2*maxx-sum<=1)
            printf("Yes\n");
        else
            printf("No\n");
    }
    return 0;
}