Submit: 2106 Solved: 764

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Lanran wants to cut one stick with length L into exactly N sticks with length \(L_i(i=1,2...N)\), so \(L = \sum{L_i}\). However, the cost to cut one stick in to two pieces is the length of the stick, that means cutting a stick with length x will cost x. Now he wants to know the minimal cost if he cuts stick optimally to get N sticks.

The first line will be an integer \(T (1 \leq T \leq 100)\), which is the number of test cases.

For each test data:

The first line contains an integer N \((1 \leq N \leq 10^3 )\) — the number of sticks Lanran needs to get.

Then the next one line contains N integers, the i-th integer \(L_i (1 \leq p_i \leq 10^5)\) indicates the length of N sticks Lanran wants to get.

For each test data:

The first line contains an integer N \((1 \leq N \leq 10^3 )\) — the number of sticks Lanran needs to get.

Then the next one line contains N integers, the i-th integer \(L_i (1 \leq p_i \leq 10^5)\) indicates the length of N sticks Lanran wants to get.

For each case, contains one line, print the minimal minimal cost.

```
1
4
1 4 2 6
```

`23`

**不要使用任何与堆和BST相关的STL！**