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5 6
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1 2 3 4 5
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3 2 5
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1 1 3 3
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4 2 4
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2 3 4 1
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5 1 5
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3 1 4
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题目地址：
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https://www.luogu.com.cn/problem/P6242
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题解：
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https://www.luogu.com.cn/blog/Sqrtree/solution-p6242
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输出：
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14
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6
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6
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11 |
