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JGShining's kingdom consists of 2n(n is no more than 500,000) small cities which are located in two parallel lines. Half of these cities are rich in r 阅读全文
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摘自《挑战程序设计竞赛》如有错误，请指正！ （1） 定义：dp[ i ]表示以Ai为末尾的最长上升子序列。 以Ai结尾的上升子序列是：①只包含Ai的子序列②再满足 j < i 并且Aj < Ai 的以Aj为结尾的子序列，追加上Ai后得到的子序列。 于是，dp[ i ]=max(1,dp[ j ]+1 阅读全文
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Jessica's a very lovely girl wooed by lots of boys. Recently she has a problem. The final exam is coming, yet she has spent little time on it. If she 阅读全文