[HackerEarth] In Kingdom of Byteland,there are N jewellery shops that connected by road such that there is zero or more bidirectional way to go from one shop to another. - 题解

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题目信息
题号 P16819
标题 [HackerEarth] In Kingdom of Byteland,there are N jewellery shops that connected by road such that there is zero or more bidirectional way to go from one shop to another.
难度 普及
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