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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
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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
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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
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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
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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
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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
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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
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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
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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
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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