	ID	题目显示标签隐藏标签	AC / 尝试	难度
	4911	P540C Ice Cave dfs and similar *2000	0 / 0	(无)
	4910	P540D Bad Luck Island dp probabilities *1900	0 / 0	(无)
	4909	P540E Infinite Inversions binary search data structures implementation sortings trees *2100	0 / 0	(无)
	4908	P542A Place Your Ad Here data structures sortings *2400	0 / 0	(无)
	4907	P542B Duck Hunt data structures *3100	0 / 0	(无)
	4906	P542C Idempotent functions constructive algorithms graphs math *2000	0 / 0	(无)
	4905	P542D Superhero's Job dfs and similar dp hashing math number theory *2600	0 / 0	(无)
	4904	P542E Playing on Graph graphs shortest paths *2600	0 / 0	(无)
	4903	P542F Quest dp greedy *2100	0 / 0	(无)
	4902	P543A Writing Code dp *1800	0 / 0	(无)
	4901	P543B Destroying Roads constructive algorithms graphs shortest paths *2100	0 / 0	(无)
	4900	P543C Remembering Strings bitmasks dp *2500	0 / 0	(无)
	4899	P543D Road Improvement dp trees *2300	0 / 0	(无)
	4898	P543E Listening to Music constructive algorithms data structures *3200	0 / 0	(无)
	4897	P544A Set of Strings implementation strings *1100	0 / 0	(无)
	4896	P544B Sea and Islands constructive algorithms implementation *1400	0 / 0	(无)
	4895	P545A Toy Cars implementation *900	0 / 0	(无)
	4894	P545B Equidistant String greedy *1100	0 / 0	(无)
	4893	P545C Woodcutters dp greedy *1500	0 / 0	(无)
	4892	P545D Queue greedy implementation sortings *1300	0 / 0	(无)
	4891	P545E Paths and Trees graphs greedy shortest paths *2000	0 / 0	(无)
	4890	P546A Soldier and Bananas brute force implementation math *800	0 / 0	(无)
	4889	P546B Soldier and Badges brute force greedy implementation sortings *1200	0 / 0	(无)
	4888	P546C Soldier and Cards brute force dfs and similar games *1400	0 / 0	(无)
	4887	P546D Soldier and Number Game constructive algorithms dp math number theory *1700	0 / 0	(无)
	4886	P546E Soldier and Traveling flows graphs math *2100	0 / 0	(无)
	4885	P547A Mike and Frog brute force greedy implementation math *2200	0 / 0	(无)
	4884	P547B Mike and Feet binary search data structures dp dsu *1900	0 / 0	(无)
	4883	P547C Mike and Foam bitmasks combinatorics dp math number theory *2300	0 / 0	(无)
	4882	P547D Mike and Fish constructive algorithms dfs and similar graphs *2600	0 / 0	(无)
	4881	P547E Mike and Friends data structures string suffix structures strings trees *2800	0 / 0	(无)
	4880	P548A Mike and Fax brute force implementation strings *1100	0 / 0	(无)
	4879	P548B Mike and Fun brute force dp greedy implementation *1400	0 / 0	(无)
	4878	P549A Face Detection implementation strings *900	0 / 0	(无)
	4877	P549B Looksery Party constructive algorithms dfs and similar graphs greedy *2300	0 / 0	(无)
	4876	P549C The Game Of Parity games *2200	0 / 0	(无)
	4875	P549D Haar Features greedy implementation *1900	0 / 0	(无)
	4874	P549E Sasha Circle geometry math *2700	0 / 0	(无)
	4873	P549F Yura and Developers data structures divide and conquer *2800	0 / 0	(无)
	4872	P549G Happy Line constructive algorithms greedy sortings *2200	0 / 0	(无)
	4871	P549H Degenerate Matrix binary search math *2100	0 / 0	(无)
	4870	P550A Two Substrings brute force dp greedy implementation strings *1500	0 / 0	(无)
	4869	P550B Preparing Olympiad bitmasks brute force *1400	0 / 0	(无)
	4868	P550C Divisibility by Eight brute force dp math *1500	0 / 0	(无)
	4867	P550D Regular Bridge constructive algorithms graphs implementation *1900	0 / 0	(无)
	4866	P550E Brackets in Implications constructive algorithms greedy implementation math *2200	0 / 0	(无)
	4865	P551A GukiZ and Contest brute force implementation sortings *800	0 / 0	(无)
	4864	P551B ZgukistringZ brute force constructive algorithms implementation strings *1800	0 / 0	(无)
	4863	P551C GukiZ hates Boxes binary search greedy *2200	0 / 0	(无)
	4862	P551D GukiZ and Binary Operations combinatorics implementation math matrices number theory *2100	0 / 0	(无)
	4861	P551E GukiZ and GukiZiana binary search data structures implementation *2500	0 / 0	(无)
	4860	P552A Vanya and Table implementation math *1000	0 / 0	(无)
	4859	P552B Vanya and Books implementation math *1200	0 / 0	(无)
	4858	P552C Vanya and Scales brute force dp greedy math meet-in-the-middle number theory *1900	0 / 0	(无)
	4857	P552D Vanya and Triangles brute force combinatorics data structures geometry math sortings *1900	0 / 0	(无)
	4856	P552E Vanya and Brackets brute force dp expression parsing greedy implementation strings *2100	0 / 0	(无)
	4855	P553A Kyoya and Colored Balls combinatorics dp math *1500	0 / 0	(无)
	4854	P553B Kyoya and Permutation binary search combinatorics constructive algorithms greedy implementation math *1900	0 / 0	(无)
	4853	P553C Love Triangles dfs and similar dsu graphs *2200	0 / 0	(无)
	4852	P553D Nudist Beach binary search graphs greedy *2300	0 / 0	(无)
	4851	P553E Kyoya and Train dp fft graphs math probabilities *3200	0 / 0	(无)
	4850	P554A Kyoya and Photobooks brute force math strings *900	0 / 0	(无)
	4849	P554B Ohana Cleans Up brute force greedy strings *1200	0 / 0	(无)
	4848	P555A Case of Matryoshkas implementation *1500	0 / 0	(无)
	4847	P555B Case of Fugitive data structures greedy sortings *2000	0 / 0	(无)
	4846	P555C Case of Chocolate data structures *2200	0 / 0	(无)
	4845	P555D Case of a Top Secret binary search implementation math *2500	0 / 0	(无)
	4844	P555E Case of Computer Network dfs and similar graphs trees *2800	0 / 0	(无)
	4843	P556A Case of the Zeros and Ones greedy *900	0 / 0	(无)
	4842	P556B Case of Fake Numbers brute force implementation *1100	0 / 0	(无)
	4841	P557A Ilya and Diplomas greedy implementation math *1100	0 / 0	(无)
	4840	P557B Pasha and Tea constructive algorithms implementation math sortings *1500	0 / 0	(无)
	4839	P557C Arthur and Table brute force data structures dp greedy math sortings *1900	0 / 0	(无)
	4838	P557D Vitaly and Cycle combinatorics dfs and similar graphs math *2000	0 / 0	(无)
	4837	P557E Ann and Half-Palindrome data structures dp graphs string suffix structures strings trees *2300	0 / 0	(无)
	4836	P558A Lala Land and Apple Trees brute force implementation sortings *1100	0 / 0	(无)
	4835	P558B Amr and The Large Array implementation *1300	0 / 0	(无)
	4834	P558C Amr and Chemistry brute force graphs greedy math shortest paths *1900	0 / 0	(无)
	4833	P558D Guess Your Way Out! II data structures implementation sortings *2300	0 / 0	(无)
	4832	P558E A Simple Task data structures sortings strings *2300	0 / 0	(无)
	4831	P559A Gerald's Hexagon brute force geometry math *1600	0 / 0	(无)
	4830	P559B Equivalent Strings divide and conquer hashing sortings strings *1700	0 / 0	(无)
	4829	P559C Gerald and Giant Chess combinatorics dp math number theory *2200	0 / 0	(无)
	4828	P559D Randomizer combinatorics geometry probabilities *2800	0 / 0	(无)
	4827	P559E Gerald and Path dp sortings *3000	0 / 0	(无)
	4826	P560A Currency System in Geraldion implementation sortings *1000	0 / 0	(无)
	4825	P560B Gerald is into Art constructive algorithms implementation *1200	0 / 0	(无)
	4824	P566A Matching Names dfs and similar strings trees *2300	0 / 0	(无)
	4823	P566B Replicating Processes constructive algorithms greedy *2600	0 / 0	(无)
	4822	P566C Logistical Questions dfs and similar divide and conquer trees *3000	0 / 0	(无)
	4821	P566D Restructuring Company data structures dsu *1900	0 / 0	(无)
	4820	P566E Restoring Map bitmasks constructive algorithms trees *3200	0 / 0	(无)
	4819	P566F Clique in the Divisibility Graph dp math number theory *1500	0 / 0	(无)
	4818	P566G Max and Min geometry *2500	0 / 0	(无)
	4817	P567A Lineland Mail greedy implementation *900	0 / 0	(无)
	4816	P567B Berland National Library implementation *1300	0 / 0	(无)
	4815	P567C Geometric Progression binary search data structures dp *1700	0 / 0	(无)
	4814	P567D One-Dimensional Battle Ships binary search data structures greedy sortings *1700	0 / 0	(无)
	4813	P567E President and Roads dfs and similar graphs hashing shortest paths *2200	0 / 0	(无)
	4812	P567F Mausoleum dp *2400	0 / 0	(无)

HGNU

根据当前过滤条件随机选择一道题

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开发与维护

杨旭龙、王树淳、王国斌、宋文宇、朱天伦

特别鸣谢

肖飞、关玉蓉、魏银珍、周芬

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