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Description Chiaki has n intervals and the i-th of them is [li, ri]. She wants to delete some intervals so that there does not exist three intervals a 阅读全文
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Description Coco is a beautiful ACMer girl living in a very beautiful mountain. There are many trees and flowers on the mountain, and there are many a 阅读全文
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Description Several days ago, a beast caught a beautiful princess and the princess was put in prison. To rescue the princess, a prince who wanted to m 阅读全文
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Description Let us define two functions f and g on positive integer numbers. You need to process Q queries. In each query, you will be given three int 阅读全文
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题目描述 Iahub and Sorin are the best competitive programmers in their town. However, they can't both qualify to an important contest. The selection will 阅读全文
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好久没有整题目了,并不是没有好的题目整,只是自己懒了太懒了太懒了。。。赶紧整理几个题补一下自己的罪过。。。 Description Bo is a "Life Winner".He likes playing chessboard games with his girlfriend G.The si 阅读全文