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Osu! is a famous music game that attracts a lot of people. In osu!, there is a performance scoring system, which evaluates your performance. Each song 阅读全文
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I used to think I could be anything, but now I know that I couldn't do anything. So I started traveling.The nation looks like a connected bidirectiona 阅读全文
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After eating food from Chernobyl, DRD got a super power: he could clone himself right now! He used this power for several times. He found out that thi 阅读全文
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A few years ago Sajjad left his school and register to another one due to security reasons. Now he wishes to find Amir, one of his schoolmates and goo 阅读全文
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There is a tree of N nodes which are numbered from 1 to N. Unfortunately, its edges are missing so we don't know how the nodes are connected. Instead 阅读全文
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Little Hi is playing a video game. Each time he accomplishes a quest in the game, Little Hi has a chance to get a legendary item. At the beginning the 阅读全文
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Noting is more interesting than rotation!Your little sister likes to rotate things. To put it easier to analyze, your sister makes n rotations. In the 阅读全文