	ID	题目显示标签隐藏标签	AC / 尝试	难度
	6095	P243B Hydra graphs sortings *2000	0 / 0	(无)
	6081	P246A Buggy Sorting constructive algorithms greedy sortings *900	0 / 0	(无)
	6077	P246E Blood Cousins Return binary search data structures dfs and similar dp sortings *2400	0 / 0	(无)
	6071	P249D Donkey and Stars data structures dp geometry math sortings *2700	0 / 0	(无)
	6058	P252B Unsorting Array brute force sortings *1800	0 / 0	(无)
	6056	P253B Physics Practical binary search dp sortings two pointers *1400	0 / 0	(无)
	6053	P253E Printer binary search data structures implementation sortings *2200	0 / 0	(无)
	6052	P254A Cards with Numbers constructive algorithms sortings *1200	0 / 0	(无)
	6040	P257A Sockets greedy implementation sortings *1100	0 / 0	(无)
	6023	P261A Maxim and Discounts greedy sortings *1400	0 / 0	(无)
	6015	P263B Squares greedy implementation sortings *900	0 / 0	(无)
	5992	P268E Playlist math probabilities sortings *2100	0 / 0	(无)
	5988	P269D Maximum Waterfall data structures dp graphs sortings *2600	0 / 0	(无)
	5976	P272D Dima and Two Sequences combinatorics math sortings *1600	0 / 0	(无)
	5972	P274A k-Multiple Free Set binary search greedy sortings *1500	0 / 0	(无)
	5969	P274D Lovely Matrix dfs and similar graphs greedy sortings *2200	0 / 0	(无)
	5963	P276C Little Girl and Maximum Sum data structures greedy implementation sortings *1500	0 / 0	(无)
	5927	P285C Building Permutation greedy implementation sortings *1200	0 / 0	(无)
	5921	P286D Tourists data structures sortings *2600	0 / 0	(无)
	5911	P289B Polo the Penguin and Matrix brute force dp implementation sortings ternary search *1400	0 / 0	(无)
	5904	P291A Spyke Talks special problem implementation sortings 800	0 / 0	(无)
	5870	P299A Ksusha and Array brute force number theory sortings *1000	0 / 0	(无)
	5843	P306B Optimizer data structures greedy sortings *2100	0 / 0	(无)
	5826	P313C Ilya and Matrix constructive algorithms greedy implementation sortings *1400	0 / 0	(无)
	5820	P314D Sereja and Straight Lines binary search data structures geometry sortings two pointers *2500	0 / 0	(无)
	5754	P331A2 Oh Sweet Beaverette data structures sortings *1500	0 / 0	(无)
	5741	P332C Students' Revenge data structures greedy sortings *2200	0 / 0	(无)
	5735	P333D Characteristics of Rectangles binary search bitmasks brute force implementation sortings *2100	0 / 0	(无)
	5734	P333E Summer Earnings binary search bitmasks brute force geometry sortings *2500	0 / 0	(无)
	5732	P334B Eight Point Sets sortings *1400	0 / 0	(无)
	5713	P339A Helpful Maths greedy implementation sortings strings *800	0 / 0	(无)
	5677	P347A Difference Row constructive algorithms implementation sortings *1300	0 / 0	(无)
	5675	P348A Mafia binary search math sortings *1600	0 / 0	(无)
	5666	P350C Bombs greedy implementation sortings *1600	0 / 0	(无)
	5665	P350D Looking for Owls binary search data structures geometry hashing sortings *2400	0 / 0	(无)
	5657	P352B Jeff and Periods implementation sortings *1300	0 / 0	(无)
	5655	P353B Two Heaps combinatorics constructive algorithms greedy implementation math sortings *1900	0 / 0	(无)
	5619	P362B Petya and Staircases implementation sortings *1100	0 / 0	(无)
	5596	P367C Sereja and the Arrangement of Numbers graphs greedy sortings *2000	0 / 0	(无)
	5584	P370C Mittens constructive algorithms greedy sortings *1800	0 / 0	(无)
	5576	P372A Counting Kangaroos is Fun binary search greedy sortings two pointers *1600	0 / 0	(无)
	5563	P375B Maximum Submatrix 2 data structures dp implementation sortings *1600	0 / 0	(无)
	5556	P377B Preparing for the Contest binary search data structures greedy sortings *1900	0 / 0	(无)
	5551	P378B Semifinals implementation sortings *1300	0 / 0	(无)
	5548	P379C New Year Ratings Change greedy sortings *1400	0 / 0	(无)
	5546	P379E New Year Tree Decorations geometry schedules sortings *2500	0 / 0	(无)
	5537	P381B Sereja and Stairs greedy implementation sortings *1100	0 / 0	(无)
	5534	P382C Arithmetic Progression implementation sortings *1700	0 / 0	(无)
	5530	P383B Volcanoes binary search implementation sortings two pointers *2500	0 / 0	(无)
	5525	P384B Multitasking greedy implementation sortings two pointers *1500	0 / 0	(无)
	5510	P388A Fox and Box Accumulation greedy sortings *1400	0 / 0	(无)
	5508	P388C Fox and Card Game games greedy sortings *2000	0 / 0	(无)
	5441	P404C Restore Graph dfs and similar graphs sortings *1800	0 / 0	(无)
	5438	P405A Gravity Flip greedy implementation sortings *900	0 / 0	(无)
	5411	P412B Network Configuration greedy sortings *900	0 / 0	(无)
	5387	P417D Cunning Gena bitmasks dp greedy sortings *1900	0 / 0	(无)
	5377	P421D Bug in Code binary search data structures sortings *1900	0 / 0	(无)
	5375	P424B Megacity binary search greedy implementation sortings *1200	0 / 0	(无)
	5371	P425A Sereja and Swaps brute force sortings *1500	0 / 0	(无)
	5354	P430A Points and Segments (easy) constructive algorithms sortings *1600	0 / 0	(无)
	5347	P432A Choosing Teams greedy implementation sortings *800	0 / 0	(无)
	5345	P432C Prime Swaps greedy sortings *1800	0 / 0	(无)
	5341	P433B Kuriyama Mirai's Stones dp implementation sortings *1200	0 / 0	(无)
	5340	P433C Ryouko's Memory Note implementation math sortings *1800	0 / 0	(无)
	5336	P434E Furukawa Nagisa's Tree binary search divide and conquer sortings trees *3000	0 / 0	(无)
	5323	P437B The Child and Set bitmasks greedy implementation sortings *1500	0 / 0	(无)
	5322	P437C The Child and Toy graphs greedy sortings *1400	0 / 0	(无)
	5321	P437D The Child and Zoo dsu sortings *1900	0 / 0	(无)
	5316	P439B Devu, the Dumb Guy implementation sortings *1200	0 / 0	(无)
	5314	P439D Devu and his Brother binary search sortings ternary search two pointers *1700	0 / 0	(无)
	5269	P451B Sort the Array implementation sortings *1300	0 / 0	(无)
	5247	P456A Laptops sortings *1100	0 / 0	(无)
	5238	P459B Pashmak and Flowers combinatorics implementation sortings *1300	0 / 0	(无)
	5236	P459D Pashmak and Parmida's problem data structures divide and conquer sortings *1800	0 / 0	(无)
	5235	P459E Pashmak and Graph dp sortings *1900	0 / 0	(无)
	5230	P460E Roland and Rose brute force geometry math sortings *2700	0 / 0	(无)
	5229	P461A Appleman and Toastman greedy sortings *1200	0 / 0	(无)
	5184	P471B MUH and Important Things implementation sortings *1300	0 / 0	(无)
	5169	P474E Pillars binary search data structures dp sortings trees *2000	0 / 0	(无)
	5150	P478E Wavy numbers brute force dfs and similar meet-in-the-middle sortings *2900	0 / 0	(无)
	5148	P479B Towers brute force constructive algorithms greedy implementation sortings *1400	0 / 0	(无)
	5147	P479C Exams greedy sortings *1400	0 / 0	(无)
	5134	P484B Maximum Value binary search math sortings two pointers *2100	0 / 0	(无)
	5116	P489A SwapSort greedy implementation sortings *1200	0 / 0	(无)
	5115	P489B BerSU Ball dfs and similar dp graph matchings greedy sortings two pointers *1200	0 / 0	(无)
	5110	P490A Team Olympiad greedy implementation sortings *800	0 / 0	(无)
	5100	P492B Vanya and Lanterns binary search implementation math sortings *1200	0 / 0	(无)
	5099	P492C Vanya and Exams greedy sortings *1400	0 / 0	(无)
	5098	P492D Vanya and Computer Game binary search implementation math sortings *1800	0 / 0	(无)
	5094	P493C Vasya and Basketball binary search brute force data structures implementation sortings two pointers *1600	0 / 0	(无)
	5080	P496E Distributing Parts greedy sortings *2100	0 / 0	(无)
	5069	P500B New Year Permutation dfs and similar dsu graphs greedy math sortings *1600	0 / 0	(无)
	5061	P501C Misha and Forest constructive algorithms data structures greedy sortings trees *1500	0 / 0	(无)
	5049	P507A Amr and Music greedy implementation sortings *1000	0 / 0	(无)
	5031	P510C Fox And Names dfs and similar graphs sortings *1600	0 / 0	(无)
	5006	P515C Drazil and Factorial greedy math sortings *1400	0 / 0	(无)
	4994	P519B A and B and Compilation Errors data structures implementation sortings *1100	0 / 0	(无)
	4973	P524C The Art of Dealing with ATM binary search sortings *1900	0 / 0	(无)
	4971	P524E Rooks and Rectangles data structures sortings *2400	0 / 0	(无)
	4967	P525C Ilya and Sticks greedy math sortings *1600	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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