杭电1205

 1 #include<stdio.h>
 2 
 3 int main()
 4 {
 5     int n,m;
 6     long long x,s,maxx;
 7     while(~scanf("%d",&n))
 8     {
 9         while(n--)
10         {
11             scanf("%d",&m);
12             s=0;
13             maxx=0;
14             while(m--)
15             {
16                 scanf("%lld",&x);
17                 if(x>maxx)
18                     maxx=x;
19                 s+=x;
20             }
21             if(s+1>=2*maxx)
22                 printf("Yes\n");
23             else
24                 printf("No\n");
25         }
26     }
27 }