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传送门题面：Biologists finally invent techniques of repairing DNA that contains segments causing kinds of inherited diseases. For the sake of si... 阅读全文
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传送门 题面： Liyuan lives in a old apartment. One day, he suddenly found that there was a wireless network in the building. Liyuan did not know the passwor 阅读全文
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传送门题面：The Power Cube is used as a stash of Exotic Power. There are nn cities numbered 1,2,…,n1,2,…,n where allowed to trade it. The tradin... 阅读全文
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传送门题面：Freshmen frequently make an error in computing the power of a sum of real numbers, which usually origins from an incorrect equation ... 阅读全文
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传送门题面：YJJ is a salesman who has traveled through western country. YJJ is always on journey. Either is he at the destination, or on the way... 阅读全文
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传送门题面：Censored!Time Limit: 5000MS Memory Limit: 10000K Total Submissions: 11233 Accepted: 3069 DescriptionThe alphabet of Fr... 阅读全文
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传送门题面：背单词，始终是复习英语的重要环节。在荒废了3年大学生涯后，Lele也终于要开始背单词了。 一天，Lele在某本单词书上看到了一个根据词根来背单词的方法。比如"ab",放在单词前一般表示"相反，变坏，离去"等。 于是Lele想，如果背了N个词根，那这些词根到底会不会... 阅读全文
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传送门题面：DNA SequenceTime Limit: 1000MS Memory Limit: 65536K Total Submissions: 19507 Accepted: 7431 DescriptionIt's well known... 阅读全文
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传送门题面：You are playing CSGO. There are n Main Weapons and m Secondary Weapons in CSGO. You can only choose one Main Weapon and one Secondar... 阅读全文
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传送门：题面：LMY and YY are number theory lovers. They like to find and solve some interesting number theory problems together. One day, they be... 阅读全文