	ID	题目显示标签隐藏标签	AC / 尝试	难度
	6894	P62E World Evil dp flows *2700	0 / 0	(无)
	6804	P78E Evacuation flows graphs shortest paths *2300	0 / 0	(无)
	6701	P103E Buying Sets flows graph matchings *2900	0 / 0	(无)
	6606	P126E Pills brute force flows *2900	0 / 0	(无)
	6576	P132E Bits of merry old England flows graphs *2700	0 / 0	(无)
	6441	P164C Machine Programming flows graphs *2400	0 / 0	(无)
	6226	P212A Privatization flows graphs *3000	0 / 0	(无)
	6176	P223E Planar Graph flows geometry graphs *3000	0 / 0	(无)
	6118	P237E Build String flows graphs *2000	0 / 0	(无)
	5989	P269C Flawed Flow constructive algorithms flows graphs greedy *2100	0 / 0	(无)
	5956	P277E Binary Tree on Plane flows trees *2400	0 / 0	(无)
	5945	P280D k-Maximum Subsequence Sum data structures flows graphs implementation *2800	0 / 0	(无)
	5831	P311E Biologist flows *2300	0 / 0	(无)
	5812	P316C1 Tidying Up flows *2200	0 / 0	(无)
	5811	P316C2 Tidying Up flows graph matchings *2300	0 / 0	(无)
	5783	P321B Ciel and Duel dp flows greedy *1900	0 / 0	(无)
	5692	P343E Pumping Stations brute force dfs and similar divide and conquer flows graphs greedy trees *2900	0 / 0	(无)
	5616	P362E Petya and Pipes flows graphs shortest paths *2300	0 / 0	(无)
	5337	P434D Nanami's Power Plant flows *2900	0 / 0	(无)
	5241	P457E Flow Optimality constructive algorithms flows math *3000	0 / 0	(无)
	5102	P491C Deciphering flows graph matchings *2300	0 / 0	(无)
	5075	P498C Array and Operations flows graph matchings number theory *2100	0 / 0	(无)
	5029	P510E Fox And Dinner flows *2300	0 / 0	(无)
	5018	P513F1 Scaygerboss flows *2700	0 / 0	(无)
	5017	P513F2 Scaygerboss flows *2800	0 / 0	(无)
	4886	P546E Soldier and Traveling flows graphs math *2100	0 / 0	(无)
	4627	P611H New Year and Forgotten Tree constructive algorithms flows graphs *3200	0 / 0	(无)
	4543	P628F Bear and Fair Set flows graphs *2500	0 / 0	(无)
	4444	P653D Delivery Bears binary search flows graphs *2200	0 / 0	(无)
	4246	P704D Captain America flows greedy *3100	0 / 0	(无)
	4229	P708D Incorrect Flow flows *2900	0 / 0	(无)
	4189	P717G Underfail flows *2400	0 / 0	(无)
	4179	P720B Cactusophobia dfs and similar flows *2400	0 / 0	(无)
	4159	P723E One-Way Reform constructive algorithms dfs and similar flows graphs greedy *2200	0 / 0	(无)
	4153	P724E Goods transportation dp flows greedy *2900	0 / 0	(无)
	4140	P727D T-shirts Distribution constructive algorithms flows greedy *1800	0 / 0	(无)
	4123	P730I Olympiad in Programming and Sports dp flows graphs greedy *2000	0 / 0	(无)
	4089	P736E Chess Championship constructive algorithms flows greedy math *2900	0 / 0	(无)
	4082	P739E Gosha is hunting brute force data structures dp flows math probabilities sortings *3000	0 / 0	(无)
	3867	P786E ALT data structures flows graphs trees *3200	0 / 0	(无)
	3844	P793G Oleg and chess data structures divide and conquer flows graph matchings *3400	0 / 0	(无)
	3808	P802C Heidi and Library (hard) flows *2600	0 / 0	(无)
	3797	P802N April Fools' Problem (medium) binary search flows graphs *2400	0 / 0	(无)
	3796	P802O April Fools' Problem (hard) binary search data structures flows *2900	0 / 0	(无)
	3773	P808F Card Game binary search flows graphs *2400	0 / 0	(无)
	3751	P813D Two Melodies dp flows *2600	0 / 0	(无)
	3724	P818G Four Melodies flows graphs *2600	0 / 0	(无)
	3630	P843E Maximum Flow flows graphs *3000	0 / 0	(无)
	3605	P847J Students Initiation binary search flows graphs *2400	0 / 0	(无)
	3598	P848D Shake It! combinatorics dp flows graphs *2900	0 / 0	(无)
	3583	P852D Exploration plan binary search flows graph matchings shortest paths *2100	0 / 0	(无)
	3532	P863F Almost Permutation flows *2200	0 / 0	(无)
	3478	P877F Ann and Books data structures flows hashing *2300	0 / 0	(无)
	3452	P884F Anti-Palindromize flows graphs greedy *2500	0 / 0	(无)
	3391	P899E Segments Removal data structures dsu flows implementation two pointers *2000	0 / 0	(无)
	3371	P903G Yet Another Maxflow Problem data structures flows graphs *2700	0 / 0	(无)
	3249	P925F Parametric Circulation binary search flows *3100	0 / 0	(无)
	3083	P965D Single-use Stones binary search flows greedy two pointers *1900	0 / 0	(无)
	3069	P976F Minimal k-covering flows graphs *2500	0 / 0	(无)
	2880	P1009G Allowed Letters bitmasks flows graph matchings graphs greedy *2400	0 / 0	(无)
	2853	P1016D Vasya And The Matrix constructive algorithms flows math *1800	0 / 0	(无)
	2828	P1023G Pisces data structures flows trees *3400	0 / 0	(无)
	2771	P1034B Little C Loves 3 II brute force constructive algorithms flows graph matchings *2200	0 / 0	(无)
	2714	P1045A Last chance data structures flows graph matchings graphs trees *2500	0 / 0	(无)
	2686	P1054F Electric Scheme flows graph matchings *2700	0 / 0	(无)
	2648	P1061E Politics flows graphs *2600	0 / 0	(无)
	2603	P1070I Privatization of Roads in Berland flows graph matchings graphs *2400	0 / 0	(无)
	2553	P1082G Petya and Graph flows graphs *2400	0 / 0	(无)
	2408	P1107F Vasya and Endless Credits dp flows graph matchings graphs sortings *2600	0 / 0	(无)
	2337	P1119B Alyona and a Narrow Fridge binary search flows greedy sortings *1300	0 / 0	(无)
	2274	P1139E Maximize Mex flows graph matchings graphs *2400	0 / 0	(无)
	2229	P1146G Zoning Restrictions dp flows graphs *2700	0 / 0	(无)
	2066	P1178H Stock Exchange binary search flows graphs *3500	0 / 0	(无)
	2034	P1184B2 The Doctor Meets Vader (Medium) flows graph matchings graphs shortest paths sortings *2200	0 / 0	(无)
	2033	P1184B3 The Doctor Meets Vader (Hard) flows shortest paths *2700	0 / 0	(无)
	2004	P1187G Gang Up flows graphs *2500	0 / 0	(无)
	1932	P1198E Rectangle Painting 2 flows graph matchings graphs *2500	0 / 0	(无)
	1933	P1198E Rectangle Painting 2 flows graph matchings graphs *2500	0 / 0	(无)
	1808	P1214D Treasure Island dfs and similar dp flows hashing *1900	0 / 0	(无)
	1645	P1250K Projectors flows graphs *3100	0 / 0	(无)
	1623	P1252L Road Construction flows graphs *2300	0 / 0	(无)
	1582	P1263F Economic Difficulties data structures dfs and similar dp flows graphs trees *2400	0 / 0	(无)
	1576	P1264E Beautiful League constructive algorithms flows graph matchings *2700	0 / 0	(无)
	1447	P1288F Red-Blue Graph constructive algorithms flows *2900	0 / 0	(无)
	1350	P1307G Cow and Exercise flows graphs shortest paths *3100	0 / 0	(无)
	1133	P1354F Summoning Minions constructive algorithms dp flows graph matchings greedy sortings *2500	0 / 0	(无)
	1029	P1368H1 Breadboard Capacity (easy version) dp flows greedy *3300	0 / 0	(无)
	951	P1383F Special Edges flows graphs *3200	0 / 0	(无)
	849	P1404E Bricks flows graph matchings graphs *2800	0 / 0	(无)
	829	P1408H Rainbow Triples binary search data structures flows greedy *3300	0 / 0	(无)
	797	P1416F Showing Off flows graph matchings greedy implementation *3300	0 / 0	(无)
	762	P1423B Valuable Paper binary search flows graph matchings graphs *1900	0 / 0	(无)
	735	P1426E Rock, Paper, Scissors brute force constructive algorithms flows greedy math *1800	0 / 0	(无)
	727	P1427G One Billion Shades of Grey flows graphs *3300	0 / 0	(无)
	710	P1430G Yet Another DAG Problem bitmasks dfs and similar dp flows graphs math *2600	0 / 0	(无)
	683	P1437C Chef Monocarp dp flows graph matchings greedy math sortings *1800	0 / 0	(无)
	676	P1438C Engineer Artem 2-sat chinese remainder theorem constructive algorithms fft flows *2000	0 / 0	(无)
	598	P1455E Four Points brute force constructive algorithms flows geometry greedy implementation math ternary search *2400	0 / 0	(无)
	512	P1473F Strange Set flows math *2700	0 / 0	(无)
	448	P1486E Paired Payment binary search brute force constructive algorithms dp flows graphs shortest paths *2200	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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