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DescriptionYou are going from Dhaka to Chittagong by train and you came to know one of your old friends is goingfrom city Chittagong to Sylhet. You al... 阅读全文
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DescriptionAs Harry Potter series is over, Harry has no job. Since he wants to make quick money, (he wants everything quick!) so he decided to rob ban... 阅读全文
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DescriptionTomorrow is contest day, Are you all ready?We have been training for 45 days, and all guys must be tired.But , you are so lucky comparing w... 阅读全文
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DescriptionGerald got a very curious hexagon for his birthday. The boy found out that all the angles of the hexagon are equal to. Then he measured the... 阅读全文
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DescriptionSometimes some mathematical results are hard to believe. One of the common problems is the birthday paradox. Suppose you are in a party whe... 阅读全文
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Description一组研究人员正在设计一项实验，以测试猴子的智商。他们将挂香蕉在建筑物的屋顶，同时，提供一些砖块给这些猴子。如果猴子足够聪明，它应当能够通过合理的放置一些砖块建立一个塔，并爬上去吃他们最喜欢的香蕉。研究人员有n种类型的砖块，每种类型的砖块都有无限个。第i块砖块的长宽高分别用xi，... 阅读全文
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DescriptionLetxandybe two strings over some finite alphabetA. We would like to transformxintoyallowing only operations given below:Deletion:a letter i... 阅读全文
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DescriptionThe Sky is Sprite.The Birds is Fly in the Sky.The Wind is Wonderful.Blew Throw the TreesTrees are Shaking, Leaves are Falling.Lovers Walk p... 阅读全文
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Description大家常常感慨，要做好一件事情真的不容易，确实，失败比成功容易多了！做好“一件”事情尚且不易，若想永远成功而总从不失败，那更是难上加难了，就像花钱总是比挣钱容易的道理一样。话虽这样说，我还是要告诉大家，要想失败到一定程度也是不容易的。比如，我高中的时候，就有一个神奇的女生，在英语... 阅读全文
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DescriptionThere is a hill with n holes around. The holes are signed from 0 to n-1.A rabbit must hide in one of the holes. A wolf searches the rabbit ... 阅读全文