#include <cstdio>
#define LL long long
#define max(a, b) (a)>(b)?(a):(b)
int main()
{
    int t;
    scanf("%d", &t);
    while(t--)
    {
        int n;
        scanf("%d", &n);
        LL Max=-1, sum=0; 
        for(int i=0; i<n; i++)
        {
            LL m;
            scanf("%lld", &m);
            Max=max(Max, m);
            sum+=m;
        }
        if(sum-Max>=Max-1)
            printf("Yes\n");
        else
            printf("No\n");
    }
    return 0;
}