	ID	题目显示标签隐藏标签	AC / 尝试	难度
	6211	P215D Hot Days greedy *1900	0 / 0	(无)
	6210	P215E Periodical Numbers combinatorics dp number theory *2100	0 / 0	(无)
	6209	P216A Tiling with Hexagons implementation math *1200	0 / 0	(无)
	6208	P216B Forming Teams dfs and similar implementation *1700	0 / 0	(无)
	6207	P216C Hiring Staff greedy *1800	0 / 0	(无)
	6206	P216D Spider's Web binary search sortings two pointers *1700	0 / 0	(无)
	6205	P216E Martian Luck math number theory *2000	0 / 0	(无)
	6204	P217A Ice Skating brute force dfs and similar dsu graphs *1200	0 / 0	(无)
	6203	P217B Blackboard Fibonacci brute force math *2100	0 / 0	(无)
	6202	P217C Formurosa divide and conquer dp expression parsing *2600	0 / 0	(无)
	6201	P217D Bitonix' Patrol bitmasks brute force combinatorics dfs and similar math *2900	0 / 0	(无)
	6200	P217E Alien DNA data structures dsu trees *2800	0 / 0	(无)
	6199	P218A Mountain Scenery brute force constructive algorithms implementation *1100	0 / 0	(无)
	6198	P218B Airport implementation *1100	0 / 0	(无)
	6197	P219A k-String implementation strings *1000	0 / 0	(无)
	6196	P219B Special Offer! Super Price 999 Bourles! implementation *1400	0 / 0	(无)
	6195	P219C Color Stripe brute force dp greedy *1600	0 / 0	(无)
	6194	P219D Choosing Capital for Treeland dfs and similar dp graphs trees *1700	0 / 0	(无)
	6193	P219E Parking Lot data structures *2200	0 / 0	(无)
	6192	P220A Little Elephant and Problem implementation sortings *1300	0 / 0	(无)
	6191	P220B Little Elephant and Array constructive algorithms data structures *1800	0 / 0	(无)
	6190	P220C Little Elephant and Shifts data structures *2100	0 / 0	(无)
	6189	P220D Little Elephant and Triangle geometry math *2500	0 / 0	(无)
	6188	P220E Little Elephant and Inversions data structures two pointers *2400	0 / 0	(无)
	6187	P221A Little Elephant and Function implementation math *1000	0 / 0	(无)
	6186	P221B Little Elephant and Numbers implementation *1300	0 / 0	(无)
	6185	P222A Shooshuns and Sequence brute force implementation *1200	0 / 0	(无)
	6184	P222B Cosmic Tables data structures implementation *1300	0 / 0	(无)
	6183	P222C Reducing Fractions implementation math number theory sortings *1800	0 / 0	(无)
	6182	P222D Olympiad binary search greedy sortings two pointers *1900	0 / 0	(无)
	6181	P222E Decoding Genome dp matrices *1900	0 / 0	(无)
	6180	P223A Bracket Sequence data structures expression parsing implementation *1700	0 / 0	(无)
	6179	P223B Two Strings data structures dp strings *1900	0 / 0	(无)
	6178	P223C Partial Sums combinatorics math number theory *1900	0 / 0	(无)
	6177	P223D Spider geometry graphs *3000	0 / 0	(无)
	6176	P223E Planar Graph flows geometry graphs *3000	0 / 0	(无)
	6175	P224A Parallelepiped brute force geometry math *1100	0 / 0	(无)
	6174	P224B Array bitmasks implementation two pointers *1500	0 / 0	(无)
	6173	P225A Dice Tower constructive algorithms greedy *1100	0 / 0	(无)
	6172	P225B Well-known Numbers binary search greedy number theory *1600	0 / 0	(无)
	6171	P225C Barcode dp matrices *1700	0 / 0	(无)
	6170	P225D Snake bitmasks dfs and similar graphs implementation *2200	0 / 0	(无)
	6169	P225E Unsolvable math number theory *2100	0 / 0	(无)
	6168	P226A Flying Saucer Segments math *1400	0 / 0	(无)
	6167	P226B Naughty Stone Piles greedy *1900	0 / 0	(无)
	6166	P226C Anniversary data structures implementation math matrices number theory *2400	0 / 0	(无)
	6165	P226D The table constructive algorithms greedy *2100	0 / 0	(无)
	6164	P226E Noble Knight's Path data structures trees *2900	0 / 0	(无)
	6163	P227A Where do I Turn? geometry *1300	0 / 0	(无)
	6162	P227B Effective Approach implementation *1100	0 / 0	(无)
	6161	P228A Is your horseshoe on the other hoof? implementation *800	0 / 0	(无)
	6160	P228B Two Tables brute force implementation *1400	0 / 0	(无)
	6159	P228C Fractal Detector dp hashing *2000	0 / 0	(无)
	6158	P228D Zigzag data structures *2100	0 / 0	(无)
	6157	P228E The Road to Berland is Paved With Good Intentions 2-sat dfs and similar dsu graphs *1900	0 / 0	(无)
	6156	P229A Shifts brute force two pointers *1500	0 / 0	(无)
	6155	P229B Planets binary search data structures graphs shortest paths *1700	0 / 0	(无)
	6154	P229C Triangles combinatorics graphs math *1900	0 / 0	(无)
	6153	P229D Towers dp greedy two pointers *2100	0 / 0	(无)
	6152	P229E Gifts combinatorics dp math probabilities *2600	0 / 0	(无)
	6151	P230A Dragons greedy sortings *1000	0 / 0	(无)
	6150	P230B T-primes binary search implementation math number theory *1300	0 / 0	(无)
	6149	P231A Team brute force greedy *800	0 / 0	(无)
	6148	P231B Magic, Wizardry and Wonders constructive algorithms greedy *1500	0 / 0	(无)
	6147	P231C To Add or Not to Add binary search sortings two pointers *1600	0 / 0	(无)
	6146	P231D Magic Box brute force geometry *1600	0 / 0	(无)
	6145	P231E Cactus data structures dfs and similar dp graphs trees *2100	0 / 0	(无)
	6144	P232A Cycles binary search constructive algorithms graphs greedy *1600	0 / 0	(无)
	6143	P232B Table bitmasks combinatorics dp math *1900	0 / 0	(无)
	6142	P232C Doe Graphs constructive algorithms divide and conquer dp graphs shortest paths *2600	0 / 0	(无)
	6141	P232D Fence binary search data structures string suffix structures *2900	0 / 0	(无)
	6140	P232E Quick Tortoise bitmasks divide and conquer dp *3000	0 / 0	(无)
	6139	P233A Perfect Permutation implementation math *800	0 / 0	(无)
	6138	P233B Non-square Equation binary search brute force math *1400	0 / 0	(无)
	6137	P234A Lefthanders and Righthanders implementation *1200	0 / 0	(无)
	6136	P234B Reading sortings *1000	0 / 0	(无)
	6135	P234C Weather dp implementation *1300	0 / 0	(无)
	6134	P234D Cinema implementation *1600	0 / 0	(无)
	6133	P234E Champions' League implementation *1600	0 / 0	(无)
	6132	P234F Fence dp *1800	0 / 0	(无)
	6131	P234G Practice constructive algorithms divide and conquer implementation *1600	0 / 0	(无)
	6130	P234H Merging Two Decks constructive algorithms greedy *2000	0 / 0	(无)
	6129	P235A LCM Challenge number theory *1600	0 / 0	(无)
	6128	P235B Let's Play Osu! dp math probabilities *2000	0 / 0	(无)
	6127	P235C Cyclical Quest data structures string suffix structures strings *2700	0 / 0	(无)
	6126	P235D Graph Game graphs *3000	0 / 0	(无)
	6125	P235E Number Challenge combinatorics dp implementation math number theory *2600	0 / 0	(无)
	6124	P236A Boy or Girl brute force implementation strings *800	0 / 0	(无)
	6123	P236B Easy Number Challenge implementation number theory *1300	0 / 0	(无)
	6122	P237A Free Cash implementation *1000	0 / 0	(无)
	6121	P237B Young Table implementation sortings *1500	0 / 0	(无)
	6120	P237C Primes on Interval binary search number theory two pointers *1600	0 / 0	(无)
	6119	P237D T-decomposition dfs and similar graphs greedy trees *2000	0 / 0	(无)
	6118	P237E Build String flows graphs *2000	0 / 0	(无)
	6117	P238A Not Wool Sequences constructive algorithms math *1300	0 / 0	(无)
	6116	P238B Boring Partition constructive algorithms *1800	0 / 0	(无)
	6115	P238C World Eater Brothers dfs and similar dp greedy trees *2100	0 / 0	(无)
	6114	P238D Tape Programming data structures implementation *2900	0 / 0	(无)
	6113	P238E Meeting Her dp graphs shortest paths *2600	0 / 0	(无)
	6112	P239A Two Bags of Potatoes greedy implementation math *1200	0 / 0	(无)

HGNU

根据当前过滤条件随机选择一道题

状态

支持

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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