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###题目描述： A family hierarchy is usually presented by a pedigree tree. Your job is to count those family members who have no child. Input Specification: 阅读全文
posted @ 2022-08-05 23:39
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题目描述： As an emergency rescue team leader of a city, you are given a special map of your country. The map shows several scattered cities connected by s 阅读全文
posted @ 2022-08-05 22:59
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