	ID	题目显示标签隐藏标签	AC / 尝试	难度
	6654	P117A Elevator implementation math *1300	0 / 0	(无)
	6650	P117E Tree or not Tree data structures divide and conquer implementation trees *2900	0 / 0	(无)
	6649	P118A String Task implementation strings *1000	0 / 0	(无)
	6648	P118B Present from Lena constructive algorithms implementation *1000	0 / 0	(无)
	6644	P119A Epic Game implementation *800	0 / 0	(无)
	6643	P119B Before Exam constructive algorithms implementation sortings *1900	0 / 0	(无)
	6639	P120A Elevator brute force implementation math *1000	0 / 0	(无)
	6638	P120B Quiz League implementation *1100	0 / 0	(无)
	6637	P120C Winnie-the-Pooh and honey implementation math *1100	0 / 0	(无)
	6633	P120G Boom implementation *1800	0 / 0	(无)
	6629	P121A Lucky Sum implementation *1100	0 / 0	(无)
	6626	P121D Lucky Segments binary search implementation two pointers *2500	0 / 0	(无)
	6623	P122B Lucky Substring brute force implementation *1000	0 / 0	(无)
	6622	P123A Prime Permutation implementation number theory strings *1300	0 / 0	(无)
	6616	P124B Permutations brute force combinatorics implementation *1400	0 / 0	(无)
	6614	P125B Simple XML implementation *1000	0 / 0	(无)
	6604	P127B Canvas Frames implementation *1000	0 / 0	(无)
	6602	P128B String brute force constructive algorithms hashing implementation string suffix structures strings *2100	0 / 0	(无)
	6600	P128D Numbers constructive algorithms implementation *2000	0 / 0	(无)
	6598	P129A Cookies implementation *900	0 / 0	(无)
	6597	P129B Students and Shoelaces brute force dfs and similar graphs implementation *1200	0 / 0	(无)
	6596	P130A Hexagonal numbers special problem implementation 900	0 / 0	(无)
	6595	P130B Gnikool Ssalg special problem implementation strings 1400	0 / 0	(无)
	6586	P131A cAPS lOCK implementation strings *1000	0 / 0	(无)
	6585	P131B Opposites Attract implementation math *1200	0 / 0	(无)
	6580	P132A Turing Tape implementation *1300	0 / 0	(无)
	6579	P132B Piet implementation *2100	0 / 0	(无)
	6575	P133A HQ9+ implementation *900	0 / 0	(无)
	6574	P133B Unary implementation *1200	0 / 0	(无)
	6573	P134A Average Numbers brute force implementation *1200	0 / 0	(无)
	6570	P135A Replacement greedy implementation sortings *1300	0 / 0	(无)
	6567	P135D Cycle brute force dfs and similar implementation *2500	0 / 0	(无)
	6565	P136A Presents implementation *800	0 / 0	(无)
	6564	P136B Ternary Logic implementation math *1100	0 / 0	(无)
	6563	P137A Postcards and photos implementation *900	0 / 0	(无)
	6559	P137E Last Chance data structures implementation strings *2000	0 / 0	(无)
	6558	P138A Literature Lesson implementation *1600	0 / 0	(无)
	6553	P139A Petr and Book implementation *1000	0 / 0	(无)
	6552	P139B Wallpaper implementation math *1600	0 / 0	(无)
	6550	P140B New Year Cards brute force greedy implementation *1800	0 / 0	(无)
	6545	P141A Amusing Joke implementation sortings strings *800	0 / 0	(无)
	6539	P142B Help General constructive algorithms greedy implementation *1800	0 / 0	(无)
	6534	P143B Help Kingdom of Far Far Away 2 implementation strings *1200	0 / 0	(无)
	6533	P144A Arrival of the General implementation *800	0 / 0	(无)
	6532	P144B Meeting implementation *1300	0 / 0	(无)
	6531	P144C Anagram Search implementation strings *1500	0 / 0	(无)
	6528	P145A Lucky Conversion greedy implementation *1200	0 / 0	(无)
	6525	P145D Lucky Pair combinatorics data structures implementation *2900	0 / 0	(无)
	6523	P146A Lucky Ticket implementation *800	0 / 0	(无)
	6522	P146B Lucky Mask brute force implementation *1300	0 / 0	(无)
	6521	P147A Punctuation implementation strings *1300	0 / 0	(无)
	6519	P148A Insomnia cure constructive algorithms implementation math *800	0 / 0	(无)
	6518	P148B Escape implementation math *1500	0 / 0	(无)
	6514	P149A Business trip greedy implementation sortings *900	0 / 0	(无)
	6513	P149B Martian Clock implementation *1600	0 / 0	(无)
	6504	P151A Soft Drinking implementation math *800	0 / 0	(无)
	6503	P151B Phone Numbers implementation strings *1200	0 / 0	(无)
	6502	P152A Marks implementation *900	0 / 0	(无)
	6501	P152B Steps binary search implementation *1300	0 / 0	(无)
	6484	P156B Suspects constructive algorithms data structures implementation *1600	0 / 0	(无)
	6478	P158A Next Round special problem implementation 800	0 / 0	(无)
	6477	P158B Taxi special problem greedy implementation 1100	0 / 0	(无)
	6476	P158C Cd and pwd commands special problem data structures implementation 1400	0 / 0	(无)
	6473	P159A Friends or Not special problem greedy implementation 1400	0 / 0	(无)
	6466	P160C Find Pair implementation math sortings *1700	0 / 0	(无)
	6458	P162A Pentagonal numbers special problem implementation 1100	0 / 0	(无)
	6438	P165A Supercentral Point implementation *1000	0 / 0	(无)
	6437	P165B Burning Midnight Oil binary search implementation *1500	0 / 0	(无)
	6433	P166A Rank List binary search implementation sortings *1100	0 / 0	(无)
	6428	P167A Wizards and Trolleybuses implementation *1600	0 / 0	(无)
	6423	P168A Wizards and Demonstration implementation math *900	0 / 0	(无)
	6422	P168B Wizards and Minimal Spell implementation strings *1700	0 / 0	(无)
	6417	P171C A Piece of Cake special problem implementation 2000	0 / 0	(无)
	6414	P171F ucyhf special problem brute force implementation number theory 1600	0 / 0	(无)
	6412	P171H A polyline special problem implementation 1700	0 / 0	(无)
	6411	P172A Phone Code special problem brute force implementation 800	0 / 0	(无)
	6410	P172B Pseudorandom Sequence Period special problem implementation number theory 1200	0 / 0	(无)
	6409	P172C Bus special problem implementation sortings 1500	0 / 0	(无)
	6406	P173A Rock-Paper-Scissors implementation math *1300	0 / 0	(无)
	6403	P173D Deputies constructive algorithms graphs greedy implementation *2500	0 / 0	(无)
	6400	P174B File List dp greedy implementation *1400	0 / 0	(无)
	6398	P175A Robot Bicorn Attack brute force implementation *1400	0 / 0	(无)
	6397	P175B Plane of Tanks: Pro implementation *1400	0 / 0	(无)
	6396	P175C Geometry Horse greedy implementation sortings two pointers *1600	0 / 0	(无)
	6393	P175F Gnomes of Might and Magic data structures graphs implementation shortest paths *3000	0 / 0	(无)
	6387	P177A1 Good Matrix Elements implementation *800	0 / 0	(无)
	6386	P177A2 Good Matrix Elements implementation *800	0 / 0	(无)
	6355	P180A Defragmentation implementation *1800	0 / 0	(无)
	6350	P180F Mathematical Analysis Rocks! constructive algorithms implementation math *1200	0 / 0	(无)
	6349	P181A Series of Crimes brute force geometry implementation *800	0 / 0	(无)
	6347	P182A Battlefield geometry graphs implementation shortest paths *2200	0 / 0	(无)
	6346	P182B Vasya's Calendar implementation *1000	0 / 0	(无)
	6344	P182D Common Divisors brute force hashing implementation math strings *1400	0 / 0	(无)
	6332	P186A Comparing Strings implementation strings *1100	0 / 0	(无)
	6324	P188B A + Reverse B special problem implementation 1300	0 / 0	(无)
	6323	P188C LCM special problem implementation math 1400	0 / 0	(无)
	6322	P188D Asterisks special problem implementation 1100	0 / 0	(无)
	6321	P188E HQ9+ special problem implementation 1400	0 / 0	(无)
	6320	P188F Binary Notation special problem implementation 1400	0 / 0	(无)
	6319	P188G Array Sorting special problem implementation 1600	0 / 0	(无)

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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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