Codeforces Global Round 20
F1
Array Shuffling
Codeforces
2000
原题
← EF2 →
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oolimry has an array $a$ of length $n$ which he really likes. Today, you have changed his array to $b$, a permutation of $a$, to make him sad.

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Because oolimry is only a duck, he can only perform the following operation to restore his array:

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  • Choose two integers $i,j$ such that $1 \leq i,j \leq n$.
  • Swap $b_i$ and $b_j$.
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The sadness of the array $b$ is the minimum number of operations needed to transform $b$ into $a$.

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Given the array $a$, find any array $b$ which is a permutation of $a$ that has the maximum sadness over all permutations of the array $a$.

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Input

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Each test contains multiple test cases. The first line contains a single integer $t$ ($1 \leq t \leq 10^4$)  — the number of test cases. The description of the test cases follows.

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The first line of each test case contains a single integer $n$ ($1 \leq n \leq 2 \cdot 10^5$)  — the length of the array.

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The second line of each test case contains $n$ integers $a_1, a_2, \ldots, a_n$ ($1 \leq a_i \leq n$)  — elements of the array $a$.

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

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Output

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For each test case, print $n$ integers $b_1, b_2, \ldots, b_n$ — describing the array $b$. If there are multiple answers, you may print any.

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Note

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In the first test case, the array $[1,2]$ has sadness $1$. We can transform $[1,2]$ into $[2,1]$ using one operation with $(i,j)=(1,2)$.

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In the second test case, the array $[3,3,2,1]$ has sadness $2$. We can transform $[3,3,2,1]$ into $[1,2,3,3]$ with two operations with $(i,j)=(1,4)$ and $(i,j)=(2,3)$ respectively.

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样例

Input #1
2
2
2 1
4
1 2 3 3
Output #1
1 2
3 3 2 1
InputCopy OutputCopy
题目信息
题号
1672F1
时间限制
1 s
内存限制
256 MB
标签
构造
图论
贪心

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