#P1637D. Yet Another Minimization Problem
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ID: 6291
Type: RemoteJudge
2000ms
256MiB
Tried: 0
Accepted: 0
Difficulty: (None)
Uploaded By:
Hydro
Tags> Yet Another Minimization Problem
No submission language available for this problem.
Description
You are given two arrays $a$ and $b$, both of length $n$.
You can perform the following operation any number of times (possibly zero): select an index $i$ ($1 \leq i \leq n$) and swap $a_i$ and $b_i$.
Let's define the cost of the array $a$ as $\sum_{i=1}^{n} \sum_{j=i + 1}^{n} (a_i + a_j)^2$. Similarly, the cost of the array $b$ is $\sum_{i=1}^{n} \sum_{j=i + 1}^{n} (b_i + b_j)^2$.
Your task is to minimize the total cost of two arrays.
Each test case consists of several test cases. The first line contains a single integer $t$ ($1 \leq t \leq 40$) — the number of test cases. The following is a description of the input data sets.
The first line of each test case contains an integer $n$ ($1 \leq n \leq 100$) — the length of both arrays.
The second line of each test case contains $n$ integers $a_1, a_2, \ldots, a_n$ ($1 \leq a_i \leq 100$) — elements of the first array.
The third line of each test case contains $n$ integers $b_1, b_2, \ldots, b_n$ ($1 \leq b_i \leq 100$) — elements of the second array.
It is guaranteed that the sum of $n$ over all test cases does not exceed $100$.
For each test case, print the minimum possible total cost.
Input
Each test case consists of several test cases. The first line contains a single integer $t$ ($1 \leq t \leq 40$) — the number of test cases. The following is a description of the input data sets.
The first line of each test case contains an integer $n$ ($1 \leq n \leq 100$) — the length of both arrays.
The second line of each test case contains $n$ integers $a_1, a_2, \ldots, a_n$ ($1 \leq a_i \leq 100$) — elements of the first array.
The third line of each test case contains $n$ integers $b_1, b_2, \ldots, b_n$ ($1 \leq b_i \leq 100$) — elements of the second array.
It is guaranteed that the sum of $n$ over all test cases does not exceed $100$.
Output
For each test case, print the minimum possible total cost.
Samples
3
1
3
6
4
3 6 6 6
2 7 4 1
4
6 7 2 4
2 5 3 5
0
987
914
Note
In the second test case, in one of the optimal answers after all operations $a = [2, 6, 4, 6]$, $b = [3, 7, 6, 1]$.
The cost of the array $a$ equals to $(2 + 6)^2 + (2 + 4)^2 + (2 + 6)^2 + (6 + 4)^2 + (6 + 6)^2 + (4 + 6)^2 = 508$.
The cost of the array $b$ equals to $(3 + 7)^2 + (3 + 6)^2 + (3 + 1)^2 + (7 + 6)^2 + (7 + 1)^2 + (6 + 1)^2 = 479$.
The total cost of two arrays equals to $508 + 479 = 987$.