#include <cstdio>
using namespace std;
const int all = (1e6)+5;
int con[ all ], t, max, num;
long long sum;
int main(void)
{
    scanf( "%d", &t );
    while( t -- ){
        scanf( "%d", &num );
        for( int i=0; i < num; ++ i ){
            scanf( "%d", con+i );
        }

        sum = max = con[0];
        for( int i=1; i < num; ++ i ){
            sum += con[i];
            max = max > con[i] ? max : con[i];
        }

        if( max+max <= sum + 1 ){
            puts( "Yes" );
        }
        else{
            puts( "No" );
        }
    }
    return 0;
}