Problem Set - trees - 南阳理工学院OJ

	ID	Problem Show tags Hide tags	AC / Tried	Difficulty
	4789	P622E Ants in Leaves dfs and similar greedy sortings trees *2200	0 / 0	(None)
	4765	P627D Preorder Test binary search dfs and similar dp graphs greedy trees *2600	0 / 0	(None)
	4763	P627F Island Puzzle dfs and similar dsu graphs trees *3400	0 / 0	(None)
	4752	P629E Famil Door and Roads combinatorics data structures dfs and similar dp probabilities trees *2300	0 / 0	(None)
	4723	P632F Magic Matrix brute force divide and conquer graphs matrices trees *2400	0 / 0	(None)
	4717	P633F The Chocolate Spree dfs and similar dp graphs trees *2600	0 / 0	(None)
	4706	P638C Road Improvement special problem dfs and similar graphs greedy trees 1800	0 / 0	(None)
	4703	P639B Bear and Forgotten Tree 3 constructive algorithms graphs trees *1600	0 / 0	(None)
	4699	P639F Bear and Chemistry data structures dfs and similar graphs trees *3300	0 / 0	(None)
	4687	P643E Bear and Destroying Subtrees dp math probabilities trees *2700	0 / 0	(None)
	4670	P650E Clockwork Bomb data structures dfs and similar dsu greedy trees *3200	0 / 0	(None)
	4663	P652E Pursuit For Artifacts dfs and similar dsu graphs trees *2300	0 / 0	(None)
	4657	P653E Bear and Forgotten Tree 2 dfs and similar dsu graphs trees *2400	0 / 0	(None)
	4614	P665E Beautiful Subarrays data structures divide and conquer strings trees *2100	0 / 0	(None)
	4585	P675D Tree Construction data structures trees *1800	0 / 0	(None)
	4557	P681D Gifts by the List constructive algorithms dfs and similar graphs trees *2000	0 / 0	(None)
	4553	P682C Alyona and the Tree dfs and similar dp graphs trees *1600	0 / 0	(None)
	4539	P685B Kay and Snowflake data structures dfs and similar dp trees *1900	0 / 0	(None)
	4514	P690C2 Brain Network (medium) dfs and similar graphs trees *1500	0 / 0	(None)
	4513	P690C3 Brain Network (hard) trees *2200	0 / 0	(None)
	4506	P690F2 Tree of Life (medium) constructive algorithms hashing trees *2700	0 / 0	(None)
	4505	P690F3 Tree of Life (hard) trees *3200	0 / 0	(None)
	4498	P696A Lorenzo Von Matterhorn brute force data structures implementation trees *1500	0 / 0	(None)
	4497	P696B Puzzles dfs and similar math probabilities trees *1700	0 / 0	(None)
	4494	P696E ...Wait for it... data structures dsu trees *3000	0 / 0	(None)
	4489	P698B Fix a Tree constructive algorithms dfs and similar dsu graphs trees *1700	0 / 0	(None)
	4481	P700B Connecting Universities dfs and similar dp graphs trees *1800	0 / 0	(None)
	4459	P704E Iron Man data structures geometry trees *3300	0 / 0	(None)
	4453	P706D Vasiliy's Multiset binary search bitmasks data structures trees *1800	0 / 0	(None)
	4444	P708C Centroids data structures dfs and similar dp graphs greedy trees *2300	0 / 0	(None)
	4414	P715C Digit Tree dfs and similar divide and conquer dsu trees *2700	0 / 0	(None)
	4392	P718D Andrew and Chemistry dp hashing trees *2900	0 / 0	(None)
	4374	P722D Generating Sets binary search data structures dfs and similar greedy strings trees *1900	0 / 0	(None)
	4360	P724F Uniformly Branched Trees combinatorics dp trees *2700	0 / 0	(None)
	4359	P724G Xor-matic Number of the Graph bitmasks graphs math number theory trees *2600	0 / 0	(None)
	4310	P733F Drivers Dissatisfaction data structures dsu graphs trees *2200	0 / 0	(None)
	4305	P734E Anton and Tree dfs and similar dp trees *2100	0 / 0	(None)
	4299	P735E Ostap and Tree dp trees *2500	0 / 0	(None)
	4293	P739B Alyona and a tree binary search data structures dfs and similar graphs trees *1900	0 / 0	(None)
	4284	P741D Arpa’s letter-marked tree and Mehrdad’s Dokhtar-kosh paths data structures dfs and similar trees *2900	0 / 0	(None)
	4277	P743D Chloe and pleasant prizes dfs and similar dp graphs trees *1800	0 / 0	(None)
	4262	P746G New Roads constructive algorithms graphs trees *2100	0 / 0	(None)
	4250	P748F Santa Clauses and a Soccer Championship constructive algorithms dfs and similar graphs trees *2300	0 / 0	(None)
	4239	P750F New Year and Finding Roots constructive algorithms implementation interactive trees *2800	0 / 0	(None)
	4229	P754E Dasha and cyclic table bitmasks brute force fft strings trees *2600	0 / 0	(None)
	4226	P755C PolandBall and Forest dfs and similar dsu graphs interactive trees *1300	0 / 0	(None)
	4209	P757G Can Bash Save the Day? data structures divide and conquer graphs trees *3400	0 / 0	(None)
	4204	P758E Broken Tree dfs and similar dp graphs greedy trees *2600	0 / 0	(None)
	4196	P761E Dasha and Puzzle constructive algorithms dfs and similar graphs greedy trees *2000	0 / 0	(None)
	4189	P762F Tree nesting combinatorics graphs trees *2800	0 / 0	(None)

Pick a problem randomly based on the current filter.