杭电ACM吃糖果问题

 #include <iostream>
 #include <stdio.h>
 using namespace std;
 int main()
 {
     int n,m,i,k=0;
     int sum=0;
     cin>>n;
     while (n--)
     {
         cin>>m;
         while (m--)
         {
             cin>>i;
             k=i>k?i:k;
             sum=sum+i;

         }
         sum=sum-k;
         if(sum+1>=k)
         cout<<"Yes"<<endl;
         else
         cout<<"No"<<endl;
         k=0;
         sum=0;
     }
 return 0;
 }