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Problemset

139 problems · filtered by 2 tags

#	Name	Rating↕	Solved↕
2245E	Tom and Jerry dfs and similar dsu games trees	unrated	902
2208D1	Tree Orientation (Easy Version) constructive algorithms dfs and similar dsu graphs greedy matrices trees	1800	4.8k
2208D2	Tree Orientation (Hard Version) dfs and similar dsu graphs greedy sortings trees	2200	2.1k
2190D	Prufer Vertex combinatorics dsu number theory probabilities trees	2500	1k
2187C	Jerry and Tom data structures dfs and similar dsu games graphs greedy trees	2300	1.5k
2176E	Remove at the lowest cost data structures dfs and similar dp dsu greedy implementation trees	2400	1.3k
2171D	Rae Taylor and Trees (easy version) binary search data structures dp dsu greedy implementation trees	1400	12.3k
2171F	Rae Taylor and Trees (hard version) binary search constructive algorithms data structures dp dsu greedy implementation trees	1600	7.6k
2155F	Juan's Colorful Tree data structures dfs and similar dsu graphs meet-in-the-middle trees	2800	745
2127E	Ancient Tree constructive algorithms data structures dfs and similar dsu greedy trees	2100	4.4k
2126G2	Big Wins! (hard version) binary search data structures divide and conquer dsu trees two pointers	2400	1.2k
2104G	Modulo 3 data structures divide and conquer dsu graphs trees	2700	553
2097B	Baggage Claim combinatorics dfs and similar dp dsu graphs implementation math trees	2300	2k
2081D	MST in Modulo Graph constructive algorithms dsu graphs greedy math number theory sortings trees	2600	1.2k
2063F1	Counting Is Not Fun (Easy Version) combinatorics data structures dfs and similar dp dsu graphs hashing implementation math trees	2400	1.6k
2063F2	Counting Is Not Fun (Hard Version) combinatorics data structures dfs and similar dsu graphs implementation trees	2700	951
2044G2	Medium Demon Problem (hard version) dfs and similar dp dsu graphs implementation trees	1900	4k
2029D	Cool Graph constructive algorithms data structures dfs and similar dsu graphs greedy trees	1900	4k
2021E1	Digital Village (Easy Version) brute force data structures dfs and similar dp dsu fft graphs greedy implementation math trees	2300	2k
2021E2	Digital Village (Hard Version) data structures dp dsu graphs math trees	2500	1.3k
2021E3	Digital Village (Extreme Version) data structures dfs and similar dp dsu graphs greedy math trees	2800	725
2020D	Connect the Dots brute force dp dsu graphs math trees	1800	7.6k
2006B	Iris and the Tree brute force data structures dfs and similar dsu math trees	1800	4.4k
2001C	Guess The Tree binary search brute force dfs and similar divide and conquer dsu greedy interactive trees	1500	13.1k
1994D	Funny Game constructive algorithms dsu graphs greedy math number theory trees	1900	7.7k
1987E	Wonderful Tree! brute force data structures dfs and similar dsu greedy trees	2000	4.2k
1948G	MST with Matching bitmasks brute force dsu graph matchings trees	3100	976
1940C	Burenka and Pether *special data structures dfs and similar divide and conquer dsu graphs sortings trees	unrated	44
1935F	Andrey's Tree binary search constructive algorithms data structures dfs and similar dsu greedy implementation trees	2800	634
1927F	Microcycle data structures dfs and similar dsu graphs greedy implementation sortings trees	1900	5.6k
1923E	Count Paths data structures dfs and similar dp dsu graphs trees	2000	5.3k
1920F2	Smooth Sailing (Hard Version) binary search data structures dsu geometry graphs trees	3000	668
1919D	01 Tree constructive algorithms data structures dsu greedy sortings trees	2100	4.6k
1914G1	Light Bulbs (Easy Version) brute force combinatorics dfs and similar dp dsu graphs math trees	2100	2.5k
1899G	Unusual Entertainment data structures dfs and similar dsu shortest paths sortings trees two pointers	1900	4.1k
1887D	Split binary search data structures divide and conquer dsu math trees two pointers	2700	1.3k
1873H	Mad City dfs and similar dsu games graphs shortest paths trees	1700	9.7k
1857G	Counting Graphs combinatorics divide and conquer dsu graphs greedy sortings trees	2000	5.6k
1851G	Vlad and the Mountains binary search data structures dsu graphs implementation sortings trees two pointers	2000	4.2k
1833G	Ksyusha and Chinchilla constructive algorithms dfs and similar dp dsu greedy implementation trees	1800	6.5k
1827B1	Range Sorting (Easy Version) binary search dp dsu greedy trees two pointers	2000	4.6k
1824C	LuoTianyi and XOR-Tree data structures dfs and similar dp dsu greedy trees	2500	1.7k
1801E	Gasoline prices data structures divide and conquer dsu hashing trees	3000	748
1797F	Li Hua and Path data structures dfs and similar divide and conquer dsu trees	3000	666
1788F	XOR, Tree, and Queries bitmasks constructive algorithms dfs and similar dsu graphs greedy implementation trees	2500	1.2k
1770E	Koxia and Tree combinatorics dfs and similar dp dsu math probabilities trees	2400	1.6k
1764F	Doremy's Experimental Tree brute force constructive algorithms dfs and similar dsu sortings trees	2500	1.3k
1763F	Edge Queries data structures dfs and similar dp dsu graphs trees	3000	750
1761E	Make It Connected binary search brute force constructive algorithms dsu graphs greedy matrices trees two pointers	2400	2.2k
1738D	Permutation Addicts constructive algorithms data structures dfs and similar dsu graphs trees	1900	3.8k
1738F	Connectivity Addicts constructive algorithms dsu graphs greedy interactive shortest paths trees	2400	1.4k
1726D	Edge Split brute force constructive algorithms dfs and similar dsu graphs probabilities trees	2000	4.2k
1725I	Imitating the Key Tree combinatorics dsu trees	2800	333
1709E	XOR Tree bitmasks data structures dfs and similar dsu greedy trees	2400	4.2k
1707C	DFS Trees dfs and similar dsu graphs greedy sortings trees	2400	2k
1706E	Qpwoeirut and Vertices binary search data structures dfs and similar divide and conquer dsu greedy trees	2300	4k
1696F	Tree Recovery brute force constructive algorithms dfs and similar dsu graphs trees	2600	1.2k
1681F	Unique Occurrences data structures dfs and similar divide and conquer dp dsu trees	2300	2.4k
1680F	Lenient Vertex Cover dfs and similar divide and conquer dsu graphs trees	2600	979
1671E	Preorder combinatorics divide and conquer dp dsu hashing sortings trees	2100	3.3k
1661E	Narrow Components brute force data structures dp dsu math trees	2500	1.2k
1657F	Words on Tree 2-sat dfs and similar dsu graphs trees	2600	854
1648E	Air Reform data structures dfs and similar divide and conquer dsu graphs implementation trees	3200	601
1633E	Spanning Tree Queries binary search data structures dfs and similar dsu graphs greedy math sortings trees	2400	1.8k
1628E	Groceries in Meteor Town binary search data structures dsu trees	3100	1.3k
1615D	X(or)-mas Tree bitmasks dfs and similar dsu graphs trees	2200	2.2k
1609D	Social Network dsu graphs greedy implementation trees	1600	8.6k
1559D1	Mocha and Diana (Easy Version) brute force constructive algorithms dsu graphs greedy trees	1400	16.5k
1559D2	Mocha and Diana (Hard Version) brute force constructive algorithms dfs and similar dsu graphs greedy trees two pointers	2500	3.2k
1555F	Good Graph data structures dsu graphs trees	2700	1.1k
1521D	Nastia Plays with a Tree constructive algorithms data structures dfs and similar dp dsu greedy implementation trees	2500	2.4k
1515F	Phoenix and Earthquake constructive algorithms dfs and similar dsu graphs greedy trees	2600	2.2k
1508C	Complete the MST bitmasks brute force data structures dfs and similar dsu graphs greedy trees	2500	1.8k
1494D	Dogeforces constructive algorithms data structures dfs and similar divide and conquer dsu greedy sortings trees	2300	2.9k
1463E	Plan of Lectures constructive algorithms dfs and similar dsu graphs implementation sortings trees	2400	1.8k
1416D	Graph and Queries data structures dsu graphs implementation trees	2600	2.9k
1408E	Avoid Rainbow Cycles data structures dsu graphs greedy sortings trees	2400	2.2k
1408G	Clusterization Counting combinatorics dp dsu fft graphs trees	2700	1.4k
1383A	String Transformation 1 dsu graphs greedy sortings strings trees two pointers	1700	11.4k
1380E	Merging Towers data structures dsu implementation trees	2300	2.5k
1307F	Cow and Vacation dfs and similar dsu trees	3300	690
1278D	Segment Tree data structures dsu graphs trees	2100	4.4k
1254E	Send Tree to Charlie combinatorics dfs and similar dsu trees	3300	459
1253F	Cheap Robot binary search dsu graphs shortest paths trees	2500	2.4k
1245D	Shichikuji and Power Grid dsu graphs greedy shortest paths trees	1900	10.1k
1220E	Tourism dfs and similar dp dsu graphs greedy trees	2200	3.1k
1217F	Forced Online Queries Problem data structures divide and conquer dsu graphs trees	2600	744
1213G	Path Queries divide and conquer dsu graphs sortings trees	1800	9.9k
1184E3	Daleks' Invasion (hard) data structures dsu graphs trees	2400	698
1176E	Cover it! dfs and similar dsu graphs shortest paths trees	1700	14k
1156D	0-1-Tree dfs and similar divide and conquer dp dsu trees	2200	4.9k
1139C	Edgy Trees dfs and similar dsu graphs math trees	1500	17.4k
1120D	Power Tree dfs and similar dp dsu graphs greedy trees	2500	1.8k
1042F	Leaf Sets data structures dfs and similar dsu graphs greedy sortings trees	2400	1.6k
1023F	Mobile Phone Network dfs and similar dsu graphs trees	2600	1.1k
1009F	Dominant Indices data structures dsu trees	2300	8.2k
990G	GCD Counting divide and conquer dp dsu number theory trees	2400	2.4k
982D	Shark brute force data structures dsu trees	1900	2.5k
979D	Kuro and GCD and XOR and SUM binary search bitmasks brute force data structures dp dsu greedy math number theory strings trees	2200	2.3k
962G	Visible Black Areas data structures dsu geometry trees	2800	254

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