第九届山东省ACM大赛C

输入描述:

The first line is an integer 

representing the number of test cases.

For each test case, the first line is an integer ,  representing the number of cities, the

second line are  positive integers ,

representing their values.

输出描述:

For each test case, output an integer, which is the

minimum cost of connecting these cities.

示例1

输入

2

4

1 2 3 4

1

1

输出

12

0

题目是个啥意思呢

就讲有很多城市，每个城市有个价值，

然后要修路，让任意城市可以到达其他任意城市，

修路就是两城市的价值之和，求所有路的最小价值和。

那就非常清晰了

这样修就OK

上代码

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

const int MAXN = 2e5;
int a[MAXN];

int main()
{
	int n;
	cin>>n;
	long long ans;
	while(n--)
	{
		ans = 0;
		int len ;
		cin>>len;
		for(int i = 0; i < len; i++)
		{
			cin>>a[i];
		}
		sort(a,a + len);
		for(int i = 1; i < len; i++)
		{
			ans += a[0] +a[i]; 
		}
		cout<<ans<<endl;
	}
	return 0;
}