AtCoder Regular Contest 163
C
Harmonic Mean
AtCoder
⌀ 1711
原题
← BD →
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Problem Statement

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Determine whether there is a length-$N$ sequence of positive integers $A=(A_1,A_2,\dots,A_N)$ that satisfies all of the following conditions, and if it exists, construct one.

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  • $\sum_{i=1}^{N} \frac{1}{A_i} = 1$
  • All elements of $A$ are distinct.
  • $1 \le A_i \le 10^9(1 \le i \le N)$
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You are given $T$ test cases. Find the answer for each of them.

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Constraints

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  • $1 \le T \le 500$
  • $1 \le N \le 500$
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Input

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The input is given from Standard Input in the following format:

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T
\mathrm{case}_1
\mathrm{case}_2
\vdots
\mathrm{case}_T

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Here, $\mathrm{case}_i$ is the $i$-th test case. Each test case is given in the following format:

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N

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Output

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For each case, if there is not a sequence of positive integers $A=(A_1,A_2,\dots,A_N)$ that satisfies the conditions, print No. If there is, print one in the following format:

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Yes
A_1 A_2 \dots A_N

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If there are multiple valid solutions, any of them will be accepted.

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样例

Input #1
2
3
5
Output #1
Yes
2 3 6
Yes
3 4 5 6 20
In the first test case, $N=3$. $A=(2,3,6)$ is valid because $\frac{1}{2} + \frac{1}{3} + \frac{1}{6} = 1$ and it satisfies all other conditions. In the second test case, $N=5$. $A=(3,4,5,6,20)$ is valid because $\frac{1}{3} + \frac{1}{4} + \frac{1}{5} + \frac{1}{6} + \frac{1}{20} = 1$ and it satisfies all other conditions. Note that, for example, $A=(5,5,5,5,5)$ satisfies the first and third conditions, but it is invalid because it contains duplicated elements.
题目信息
题号
arc163_c
时间限制
2 s
内存限制
1024 MB

题面与样例版权归 AtCoder 及出题人所有;中文翻译由 AI 生成(CI 管线),如有出入请以原文为准。