07 2020 档案
摘要：There are nn piles of stones, where the ii -th pile has aiai stones. Two people play a game, where they take alternating turns removing stones. In a m
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摘要：Two mages play the game. Both of them has their own set of creatures. Each creature is characterized by the integer — its strength. At the beginning o
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摘要：You are given a tree with nn vertices and (n−1)(n−1) edges. At the beginning its edges and vertices are not painted. You can perform the following ope
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摘要：There are 4 bars, possibly, having different lengths. Can they be used as the legs of the table, such that: The legs stay vertically in the vertices o
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摘要：—————————————————————————————————————————————————————————————————————————— 开开心心套个匈牙利板子就结束了，从今天开始我也是会用匈牙利的人了。虽然是网络流24题的题目，好像最大流dinic也能写，但是还是用了匈牙利。
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摘要：———————————————————————————————————————————————————————————— 今天的签到题就是手速题，除了签到最简单就是这道的（虽然过的人不多，但是真的简单）。 emmm手推+大胆猜测得出dfs序（其实比赛的时候没有意识到是dfs序，但是不碍事），后来发现
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摘要：高数题……高数还给老师了已经，开学考不知道怎么办。 最后找到了结论才过，还是队友过的……晚点补吧。
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摘要：最后有个>没截全。 ———————————————————————————————————————————————————————————————————————— 签到题，全场唯一会做。思路是对的，代码码歪了。 直接补是不行的，样例3很明显了。重复两次再补足就ok了。但是码歪了。 看了一下别人的代
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摘要：Alice, Beto, and Carlos are playing with twine. Alice starts by pulling taut the string of twine, then she folds it and holds the string at the fold.
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摘要：Several bus routes were in the city of Fishburg. None of the routes shared the same section of road, though common stops and intersections were possib
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