摘要:
You have an array a with length n, you can perform operations. Each operation is like this: choose two adjacent elements from a, say x... 阅读全文
摘要:
Hands that shed innocent blood!There are n guilty people in a line, thei-th of them holds a claw with length Li. The bell rings and ev... 阅读全文
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There are many homeless cats in PKU campus. They are all happy because the students in the cat club of PKU take good care of them. Li ... 阅读全文
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The Yongzheng Emperor (13 December 1678 – 8 October 1735), was the fifth emperor of the Qing dynasty of China. He was a very hard-work... 阅读全文