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[CEOI1999]Sightseeing trip Description There is a travel agency in Adelton town on Zanzibar island. It has decided to offer its clients, besides many 阅读全文
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[POI2006]ORK Ploughing 题目描述 Byteasar, the farmer, wants to plough his rectangular field. He can begin with ploughing a slice from any of the field's e 阅读全文
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[HNOI2009]有趣的数列 题目描述 我们称一个长度为2n的数列是有趣的,当且仅当该数列满足以下三个条件: (1)它是从1到2n共2n个整数的一个排列{ai}; (2)所有的奇数项满足a1 include include include include define lll long long 阅读全文
摘要:
Network Description Yixght is a manager of the company called SzqNetwork(SN). Now she's very worried because she has just received a bad news which de 阅读全文