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Description Meanwhile, the kingdom of K is getting ready for the marriage of the King's daughter. However, in order not to lose face in front of the r 阅读全文
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Description Xenia the programmer has a tree consisting of n nodes. We will consider the tree nodes indexed from 1 to n. We will also consider the firs 阅读全文
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Description Z国的骑士团是一个很有势力的组织，帮会中汇聚了来自各地的精英。他们劫富济贫，惩恶扬善，受到社会各 界的赞扬。最近发生了一件可怕的事情，邪恶的Y国发动了一场针对Z国的侵略战争。战火绵延五百里，在和平环境 中安逸了数百年的Z国又怎能抵挡的住Y国的军队。于是人们把所有的希望都寄托在 阅读全文