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Problemset

414 problems · filtered by 1 tag

#	Name	Rating↕	Solved↕
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
1850H	The Third Letter dfs and similar dsu graphs greedy implementation	1700	10.2k
1849E	Max to the Right of Min binary search data structures divide and conquer dp dsu two pointers	2300	2.3k
1847D	Professor Higashikata data structures dsu greedy implementation strings	1900	4.3k
1845D	Rating System binary search brute force data structures dp dsu greedy math two pointers	1800	9.2k
1844E	Great Grids 2-sat constructive algorithms dfs and similar dsu graphs	2400	2.2k
1844H	Multiple of Three Cycles combinatorics data structures dp dsu math	3400	305
1833E	Round Dance dfs and similar dsu graphs shortest paths	1600	19.5k
1833G	Ksyusha and Chinchilla constructive algorithms dfs and similar dp dsu greedy implementation trees	1800	6.5k
1829E	The Lakes dfs and similar dsu graphs implementation	1100	27.7k
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
1814F	Communication Towers brute force divide and conquer dsu	2700	1k
1810E	Monsters brute force data structures dfs and similar dsu graphs greedy	2100	4k
1806D	DSU Master combinatorics dp dsu math	2500	1.3k
1804G	Flow Control data structures dsu implementation	3500	254
1801E	Gasoline prices data structures divide and conquer dsu hashing trees	3000	748
1800E1	Unforgivable Curse (easy version) brute force constructive algorithms dsu graphs greedy strings	1400	15.9k
1800E2	Unforgivable Curse (hard version) brute force constructive algorithms dfs and similar dsu graphs greedy strings	1500	15.6k
1799E	City Union constructive algorithms dfs and similar dsu geometry greedy implementation math	2300	1.4k
1797E	Li Hua and Array brute force data structures dsu math number theory two pointers	2300	1.7k
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
1787D	Game on Axis combinatorics dfs and similar dsu graphs implementation	1900	3.9k
1780G	Delicious Dessert binary search dsu hashing math number theory string suffix structures	2400	1k
1779D	Boris and His Amazing Haircut constructive algorithms data structures dp dsu greedy sortings	1700	9.2k
1770D	Koxia and Game constructive algorithms data structures dfs and similar dsu flows games graph matchings graphs implementation	2000	4.5k
1770E	Koxia and Tree combinatorics dfs and similar dp dsu math probabilities trees	2400	1.6k
1765A	Access Levels bitmasks dsu flows graph matchings	2400	880
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
1758E	Tick, Tock combinatorics dfs and similar dsu graphs	2500	1.1k
1740G	Dangerous Laser Power constructive algorithms dsu sortings	3100	403
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
1735C	Phase Shift dfs and similar dsu graphs greedy implementation strings	1400	11k
1726C	Jatayu's Balanced Bracket Sequence data structures dsu graphs greedy	1300	13.5k
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
1725K	Kingdom of Criticism data structures dsu	2500	846
1713E	Cross Swapping 2-sat data structures dsu greedy matrices	2400	2k
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
1702E	Split Into Two Sets dfs and similar dsu graphs	1600	18.7k
1696F	Tree Recovery brute force constructive algorithms dfs and similar dsu graphs trees	2600	1.2k
1691E	Number of Groups data structures dfs and similar dsu graphs greedy sortings	2300	2.2k
1689E	ANDfinity bitmasks brute force constructive algorithms dfs and similar dsu graphs	2500	1.4k
1687C	Sanae and Giant Robot binary search brute force data structures dsu greedy sortings	2500	1.7k
1687D	Cute number binary search brute force data structures dsu implementation math	2900	775
1685D1	Permutation Weight (Easy Version) constructive algorithms dfs and similar dsu	2800	535
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
1675E	Replace With the Previous, Minimize dsu greedy strings	1500	12.2k
1671E	Preorder combinatorics divide and conquer dp dsu hashing sortings trees	2100	3.3k
1670C	Where is the Pizza? data structures dfs and similar dsu graphs implementation math	1400	11.1k
1661E	Narrow Components brute force data structures dp dsu math trees	2500	1.2k
1659E	AND-MEX Walk bitmasks brute force constructive algorithms dfs and similar dsu graphs	2200	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
1641C	Anonymity Is Important binary search brute force data structures dsu greedy sortings	2200	2.9k
1638C	Inversion Graph data structures dsu graphs math	1300	16.1k
1635E	Cars 2-sat constructive algorithms dfs and similar dsu graphs greedy sortings	2200	2.9k
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
1624G	MinOr Tree bitmasks dfs and similar dsu graphs greedy	1900	7.9k
1620A	Equal or Not Equal constructive algorithms dsu implementation	800	23.3k
1620E	Replace the Numbers constructive algorithms data structures dsu implementation	1900	9.8k
1619G	Unusual Minesweeper binary search dfs and similar dsu greedy sortings	2000	2.8k
1618G	Trader Problem data structures dsu greedy sortings	2200	2k
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
1594D	The Number of Imposters constructive algorithms dfs and similar dp dsu graphs	1700	9.8k
1592B	Hemose Shopping constructive algorithms dsu math sortings	1200	17.4k
1578B	Building Forest Trails data structures dsu	2800	491
1578L	Labyrinth binary search dsu greedy	2400	1.5k
1575J	Jeopardy of Dropped Balls binary search brute force dsu implementation	1500	4.3k
1574F	Occurrences combinatorics dfs and similar dp dsu fft graphs	2700	786
1567F	One-Four Overload 2-sat constructive algorithms dfs and similar dsu graphs implementation	2700	888
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
1556G	Gates to Another World bitmasks data structures dsu two pointers	3300	471
1555F	Good Graph data structures dsu graphs trees	2700	1.1k
1553E	Permutation Shift brute force combinatorics constructive algorithms dfs and similar dsu graphs math	2100	3.8k
1553G	Common Divisor Graph brute force constructive algorithms dsu graphs hashing math number theory	2700	1.3k
1550F	Jumping Around binary search data structures divide and conquer dp dsu graphs shortest paths	2700	958
1537F	Figure Fixing constructive algorithms dfs and similar dsu graphs greedy math	2200	2.9k
1534C	Little Alawn's Puzzle combinatorics dp dsu graphs math	1300	14k
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
1513D	GCD and MST constructive algorithms dsu graphs greedy number theory sortings	2000	6.7k
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
1482D	Playlist data structures dsu implementation shortest paths	1900	4.1k
1476D	Journey dfs and similar dp dsu implementation	1700	9.3k
1468B	Bakery data structures dsu	2900	254
1468J	Road Reform dsu graphs greedy	1800	6.2k
1466F	Euclid's nightmare bitmasks dfs and similar dsu graphs greedy math sortings	2100	3.1k

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