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PAT 1005. Spell It Right (20) Given a non negative integer N, your task is to compute the sum of all the digits of N, and output every digit of the su 阅读全文
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PAT 1004. Counting Leaves (30) A family hierarchy is usually presented by a pedigree tree. Your job is to count those family members who have no child 阅读全文
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PAT 1003. Emergency (25) As an emergency rescue team leader of a city, you are given a special map of your country. The map shows several scattered ci 阅读全文