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摘要： 不好排版，直接转移去： https://blog.csdn.net/wang_heng199/article/details/74477738 一、目录 一些历史： 1978年， M.I. Shamos's Ph.D. 的论文"Computational Geometry"标志着计算机科学的这一领域 阅读全文

摘要： Count the number of distinct sequences a1, a2, ..., an (1 ≤ ai) consisting of positive integers such that gcd(a1, a2, ..., an) = x and . As this numbe 阅读全文

摘要： Lakhesh loves to make movies, so Nephren helps her run a cinema. We may call it No. 68 Cinema. However, one day, the No. 68 Cinema runs out of changes 阅读全文

摘要： 因为凛冬将至，所以自己主要针对自己以前比较擅长但是已经忘记的部分。 2018-09-04：数学专题-数论。 2018-09-05：数学专题-几何。 2018-09-06：分治，树上分治，CDQ。 2018-09-07：数据结构-平衡树，LCT。 2018-09-08：数学专题-概率。 2018-09 阅读全文

摘要： Ivan had string s consisting of small English letters. However, his friend Julia decided to make fun of him and hid the string s. Ivan preferred makin 阅读全文

摘要： Vasya has decided to build a zip-line on trees of a nearby forest. He wants the line to be as long as possible but he doesn't remember exactly the hei 阅读全文

摘要： Vasya's telephone contains n photos. Photo number 1 is currently opened on the phone. It is allowed to move left and right to the adjacent photo by sw 阅读全文

摘要： Recently, Pari and Arya did some research about NP-Hard problems and they found the minimum vertex cover problem very interesting. Suppose the graph G 阅读全文

摘要： Long time ago, there was a great kingdom and it was being ruled by The Great Arya and Pari The Great. These two had some problems about the numbers th 阅读全文

摘要： Oleg the client and Igor the analyst are good friends. However, sometimes they argue over little things. Recently, they started a new company, but the 阅读全文