杭电1205

#include<stdio.h>

int main()
{
    int n,m;
    long long x,s,maxx;
    while(~scanf("%d",&n))
    {
        while(n--)
        {
            scanf("%d",&m);
            s=0;
            maxx=0;
            while(m--)
            {
                scanf("%lld",&x);
                if(x>maxx)
                    maxx=x;
                s+=x;
            }
            if(s+1>=2*maxx)
                printf("Yes\n");
            else
                printf("No\n");
        }
    }
}