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;}