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^ 比赛时间 ^ 比赛名称 ^ 当场过题数 ^ 至今过题数 ^ 总题数 ^ 排名 ^ |2020-07-18| [[牛客多校第三场]] | 3 | 7 | 12 |917/1175| ==== 地址:https://ac.nowcoder.com/acm/contest/5668 ==== ====== A Clam and Fish ====== ===== 题意: ===== ===== 题解: ===== ====== B Classical String Problem ====== ===== 题意: ===== ===== 题解: ===== ====== C Operation Love ====== ===== 题意： ===== 给出20个点，这20个点构成了一只手，通过给定的信息判断这只手是左手还是右手 ===== 题解： ===== 这个题很新颖，导致很多之前做题的思路都用不上，开始做题时就死磕，想面积，边长…… 都没想到点上 反而浪费了挺多时间，我觉着这个题重再观察，并且读懂题意，我读题是忘记了手掌面积不变，直接导致了队友懵逼了半小时，这个题的具体解决思路也很简单，大拇指外侧的线长6，手掌底部的线长9，小拇指外侧的线长8。判断连续的三根或者两根线是否满足这个规律就行了，由于是浮点数，这题需要控制精度。$eps = 1e-5是可以的$ ====== D Points Construction Problem ====== ===== 题意： ===== ===== 题解： ===== ====== E Two Matchings ====== ===== 题意： ===== ===== 题解： ===== ====== F Fraction Construction Problem ====== ===== 题意： ===== ===== 题解： ===== ====== G Operating on a Graph ====== ===== 题意： ===== ===== 题解： ===== ====== H Sort the Strings Revision ====== ===== 题意： ===== ===== 题解： ===== ====== I Sorting the Array ====== ===== 题意： ===== ===== 题解： ===== ====== J Operating on the Tree ====== ===== 题意： ===== ===== 题解： ===== ====== K Eleven Game ====== ===== 题意： ===== ===== 题解： ===== ====== L Problem L is the Only Lovely Problem ====== ===== 题意： ===== ===== 题解： =====