Codeforces Round 838 (Div. 2)
G
Unequal Adjacent Elements
Codeforces
3100
原题
← F→
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You are given an array $a$ consisting of $n$ positive integers.

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Find any permutation $p$ of $[1,2,\dots,n]$ such that:

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  • $p_{i-2} \lt p_i$ for all $i$, where $3 \leq i \leq n$, and
  • $a_{p_{i-1}} \neq a_{p_i}$ for all $i$, where $2 \leq i \leq n$.
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Or report that no such permutation exists.

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Input

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Each test contains multiple test cases. The first line contains a single integer $t$ ($1 \leq t \leq 10^5$) — 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 $n$ ($3 \leq n \leq 3 \cdot 10^5$) — the length of the array $a$.

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

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It is guaranteed that the sum of $n$ over all test cases does not exceed $3 \cdot 10^5$.

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Output

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For each test case, output "NO" if no such permutation exists, otherwise output "YES" in the first line and print the permutation $p$ in the next line.

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In case there are multiple permutations, print any one of them.

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You can output "YES" and "NO" in any case (for example, the strings "yEs", "yes", "Yes" and "YES" will be recognized as a positive response).

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Note

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In the first test case, $p=[1,2,3]$ is the only permutation of $[1,2,3]$ that satisfy the given constraints.

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In the second test case, $[1,3,2,4]$, $[2,1,4,3]$ and some other permutations are also acceptable.

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In the third test case, it can be proved that there does not exist any permutation of $[1,2,3]$ satisfying the given constraints.

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样例

Input #1
4
3
1 2 1
4
1 2 3 4
3
1 1 1
7
1 2 1 1 3 1 4
Output #1
YES
1 2 3
YES
3 1 4 2
NO
YES
1 2 3 5 4 7 6
InputCopy OutputCopy
题目信息
题号
1762G
时间限制
2 s
内存限制
256 MB
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