# #P1677C. Tokitsukaze and Two Colorful Tapes

ID: 7878 Type: RemoteJudge 2000ms 256MiB 尝试: 3 已通过: 1 难度: 10 上传者: 标签>constructive algorithmsdfs and similardsugraphsgreedy

# Tokitsukaze and Two Colorful Tapes

## Description

Tokitsukaze has two colorful tapes. There are $n$ distinct colors, numbered $1$ through $n$, and each color appears exactly once on each of the two tapes. Denote the color of the $i$-th position of the first tape as $ca_i$, and the color of the $i$-th position of the second tape as $cb_i$.

Now Tokitsukaze wants to select each color an integer value from $1$ to $n$, distinct for all the colors. After that she will put down the color values in each colored position on the tapes. Denote the number of the $i$-th position of the first tape as $numa_i$, and the number of the $i$-th position of the second tape as $numb_i$.

For example, for the above picture, assuming that the color red has value $x$ ($1 \leq x \leq n$), it appears at the $1$-st position of the first tape and the $3$-rd position of the second tape, so $numa_1=numb_3=x$.

Note that each color $i$ from $1$ to $n$ should have a distinct value, and the same color which appears in both tapes has the same value.

After labeling each color, the beauty of the two tapes is calculated as $$\sum_{i=1}^{n}|numa_i-numb_i|.$$

The first contains a single positive integer $t$ ($1 \leq t \leq 10^4$) — the number of test cases.

For each test case, the first line contains a single integer $n$ ($1\leq n \leq 10^5$) — the number of colors.

The second line contains $n$ integers $ca_1, ca_2, \ldots, ca_n$ ($1 \leq ca_i \leq n$) — the color of each position of the first tape. It is guaranteed that $ca$ is a permutation.

The third line contains $n$ integers $cb_1, cb_2, \ldots, cb_n$ ($1 \leq cb_i \leq n$) — the color of each position of the second tape. It is guaranteed that $cb$ is a permutation.

It is guaranteed that the sum of $n$ over all test cases does not exceed $2 \cdot 10^{5}$.

For each test case, print a single integer — the highest possible beauty.

## Input

The first contains a single positive integer $t$ ($1 \leq t \leq 10^4$) — the number of test cases.

For each test case, the first line contains a single integer $n$ ($1\leq n \leq 10^5$) — the number of colors.

The second line contains $n$ integers $ca_1, ca_2, \ldots, ca_n$ ($1 \leq ca_i \leq n$) — the color of each position of the first tape. It is guaranteed that $ca$ is a permutation.

The third line contains $n$ integers $cb_1, cb_2, \ldots, cb_n$ ($1 \leq cb_i \leq n$) — the color of each position of the second tape. It is guaranteed that $cb$ is a permutation.

It is guaranteed that the sum of $n$ over all test cases does not exceed $2 \cdot 10^{5}$.

## Output

For each test case, print a single integer — the highest possible beauty.

## Samples

3
6
1 5 4 3 2 6
5 3 1 4 6 2
6
3 5 4 6 2 1
3 6 4 5 2 1
1
1
1

18
10
0


## Note

An optimal solution for the first test case is shown in the following figure:

The beauty is $\left|4-3 \right|+\left|3-5 \right|+\left|2-4 \right|+\left|5-2 \right|+\left|1-6 \right|+\left|6-1 \right|=18$.

An optimal solution for the second test case is shown in the following figure:

The beauty is $\left|2-2 \right|+\left|1-6 \right|+\left|3-3 \right|+\left|6-1 \right|+\left|4-4 \right|+\left|5-5 \right|=10$.