XDOJ_1082_图的最大边数

#include<iostream>
#include<cstring>
#include<cstdio>
#include<algorithm>
using namespace std;

int n;

int main()
{
    int T;
    scanf("%d",&T);
    while(T--)
    {
        long long maxx = 0,sum = 0,temp;
        scanf("%d",&n);
        while(n--)
        {
            scanf("%lld",&temp);
            maxx = max(maxx,temp);
            sum += temp;
        }
        printf("%lld\n",min(sum/2,sum-maxx));
    } 
    return 0;
}