Problemset - Codeforces

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dsu

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Problems

#	Name
1620A	Equal or Not Equal constructive algorithms, dsu, implementation	800	x21417
217A	Ice Skating brute force, dfs and similar, dsu, graphs	1200	x20800
1249B1	Books Exchange (easy version) dsu, math	1000	x20491
977E	Cyclic Components dfs and similar, dsu, graphs	1500	x19936
1927D	Find the Different Ones! binary search, brute force, data structures, dp, dsu, greedy, two pointers	1300	x19922
1829E	The Lakes dfs and similar, dsu, graphs, implementation	1100	x19241
277A	Learning Languages dfs and similar, dsu	1400	x18470
1167C	News Distribution dfs and similar, dsu, graphs	1400	x17744
1365D	Solve The Maze constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, shortest paths	1700	x16862
1249B2	Books Exchange (hard version) dfs and similar, dsu, math	1300	x16604
1332C	K-Complete Word dfs and similar, dsu, greedy, implementation, strings	1500	x16245
501B	Misha and Changing Handles data structures, dsu, strings	1100	x15907
1592B	Hemose Shopping constructive algorithms, dsu, math, sortings	1200	x15763
771A	Bear and Friendship Condition dfs and similar, dsu, graphs	1500	x14986
1638C	Inversion Graph data structures, dsu, graphs, math	1300	x14560
1263D	Secret Passwords dfs and similar, dsu, graphs	1500	x13739
1559D1	Mocha and Diana (Easy Version) brute force, constructive algorithms, dsu, graphs, greedy, trees	1400	x13537
600E	Lomsat gelral data structures, dfs and similar, dsu, trees	2300	x13217
356A	Knight Tournament data structures, dsu	1500	x13196
1292A	NEKO's Maze Game data structures, dsu, implementation	1400	x13151
1702E	Split Into Two Sets dfs and similar, dsu, graphs	1600	x12872
1534C	Little Alawn's Puzzle combinatorics, dp, dsu, graphs, math	1300	x12671
1800E1	Unforgivable Curse (easy version) brute force, constructive algorithms, dsu, graphs, greedy, strings	1400	x12504
1800E2	Unforgivable Curse (hard version) brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, strings	1500	x12460
505B	Mr. Kitayuta's Colorful Graph dfs and similar, dp, dsu, graphs	1400	x12419
445B	DZY Loves Chemistry dfs and similar, dsu, greedy	1400	x12357
1139C	Edgy Trees dfs and similar, dsu, graphs, math, trees	1500	x12324
1726C	Jatayu's Balanced Bracket Sequence data structures, dsu, graphs, greedy	1300	x12207
755C	PolandBall and Forest dfs and similar, dsu, graphs, interactive, trees	1300	x12008
1833E	Round Dance dfs and similar, dsu, graphs, shortest paths	1600	x11209
25D	Roads not only in Berland dsu, graphs, trees	1900	x10810
1176E	Cover it! dfs and similar, dsu, graphs, shortest paths, trees	1700	x10797
902B	Coloring a Tree dfs and similar, dsu, greedy	1200	x10708
1909C	Heavy Intervals constructive algorithms, data structures, dsu, greedy, math, sortings	1400	x10599
1675E	Replace With the Previous, Minimize dsu, greedy, strings	1500	x10438
1383A	String Transformation 1 dsu, graphs, greedy, sortings, strings, trees, two pointers	1700	x10377
763A	Timofey and a tree dfs and similar, dp, dsu, graphs, implementation, trees	1600	x10345
1670C	Where is the Pizza? data structures, dfs and similar, dsu, graphs, implementation, math	1400	x9784
1735C	Phase Shift dfs and similar, dsu, graphs, greedy, implementation, strings	1400	x9748
1370D	Odd-Even Subsequence binary search, dp, dsu, greedy, implementation	2000	x9484
959B	Mahmoud and Ehab and the message dsu, greedy, implementation	1200	x9436
722C	Destroying Array data structures, dsu	1600	x9130
1209D	Cow and Snacks dfs and similar, dsu, graphs	1700	x9120
1253D	Harmonious Graph constructive algorithms, dfs and similar, dsu, graphs, greedy, sortings	1700	x9078
500B	New Year Permutation dfs and similar, dsu, graphs, greedy, math, sortings	1600	x8793
409H	A + B Strikes Back *special problem, brute force, constructive algorithms, dsu, implementation	1500	x8781
103B	Cthulhu dfs and similar, dsu, graphs	1500	x8661
1476D	Journey dfs and similar, dp, dsu, implementation	1700	x8476
1130C	Connect brute force, dfs and similar, dsu	1400	x8462
547B	Mike and Feet binary search, data structures, dp, dsu	1900	x8438
1971G	XOUR data structures, dsu, sortings	1700	x8298
1620E	Replace the Numbers constructive algorithms, data structures, dsu, implementation	1900	x8038
1411C	Peaceful Rooks dfs and similar, dsu, graphs	1700	x7920
1850H	The Third Letter dfs and similar, dsu, graphs, greedy, implementation	1700	x7897
1779D	Boris and His Amazing Haircut constructive algorithms, data structures, dp, dsu, greedy, sortings	1700	x7726
1845D	Rating System binary search, brute force, data structures, dp, dsu, greedy, math, two pointers	1800	x7594
609E	Minimum spanning tree for each edge data structures, dfs and similar, dsu, graphs, trees	2100	x7432
515B	Drazil and His Happy Friends brute force, dsu, meet-in-the-middle, number theory	1300	x7402
659E	New Reform data structures, dfs and similar, dsu, graphs, greedy	1600	x7395
1242B	0-1 MST dfs and similar, dsu, graphs, sortings	1900	x7379
1594D	The Number of Imposters constructive algorithms, dfs and similar, dp, dsu, graphs	1700	x7306
1245D	Shichikuji and Power Grid dsu, graphs, greedy, shortest paths, trees	1900	x7302
939D	Love Rescue dfs and similar, dsu, graphs, greedy, strings	1600	x7207
1609D	Social Network dsu, graphs, greedy, implementation, trees	1600	x7181
1213G	Path Queries divide and conquer, dsu, graphs, sortings, trees	1800	x7016
1873H	Mad City dfs and similar, dsu, games, graphs, shortest paths, trees	1700	x7004
723D	Lakes in Berland dfs and similar, dsu, graphs, greedy, implementation	1600	x6898
731C	Socks dfs and similar, dsu, graphs, greedy	1600	x6867
1859D	Andrey and Escape from Capygrad binary search, data structures, dp, dsu, greedy, sortings	1800	x6800
1131F	Asya And Kittens constructive algorithms, dsu	1700	x6548
920F	SUM and REPLACE brute force, data structures, dsu, number theory	2000	x6482
920E	Connected Components? data structures, dfs and similar, dsu, graphs	2100	x6135
1872F	Selling a Menagerie dfs and similar, dsu, graphs, implementation, math	1800	x6080
1344B	Monopole Magnets constructive algorithms, dfs and similar, dsu, graphs	2000	x6017
1095F	Make It Connected dsu, graphs, greedy	1900	x6016
490B	Queue dsu, implementation	1500	x5947
1624G	MinOr Tree bitmasks, dfs and similar, dsu, graphs, greedy	1900	x5768
698B	Fix a Tree constructive algorithms, dfs and similar, dsu, graphs, trees	1700	x5661
13E	Holes data structures, dsu	2700	x5645
455C	Civilization dfs and similar, dp, dsu, ternary search, trees	2100	x5614
843A	Sorting by Subsequences dfs and similar, dsu, implementation, math, sortings	1400	x5587
371D	Vessels data structures, dsu, implementation, trees	1800	x5465
1922D	Berserk Monsters brute force, data structures, dsu, implementation, math	1900	x5458
886C	Petya and Catacombs dsu, greedy, implementation, trees	1300	x5450
691D	Swaps in Permutation dfs and similar, dsu, math	1700	x5402
1009F	Dominant Indices data structures, dsu, trees	2300	x5380
1920D	Array Repetition binary search, brute force, dsu, implementation, math	1900	x5345
1513D	GCD and MST constructive algorithms, dsu, graphs, greedy, number theory, sortings	2000	x5208
1833G	Ksyusha and Chinchilla constructive algorithms, dfs and similar, dp, dsu, greedy, implementation, trees	1800	x5192
472D	Design Tutorial: Inverse the Problem dfs and similar, dsu, shortest paths, trees	1900	x5189
741B	Arpa's weak amphitheater and Mehrdad's valuable Hoses dfs and similar, dp, dsu	1600	x5179
875B	Sorting the Coins dsu, implementation, sortings, two pointers	1500	x5175
1055B	Alice and Hairdresser dsu, implementation	1300	x4960
776D	The Door Problem 2-sat, dfs and similar, dsu, graphs	2000	x4945
1276B	Two Fairs combinatorics, dfs and similar, dsu, graphs	1900	x4885
1985H1	Maximize the Largest Component (Easy Version) brute force, data structures, dfs and similar, dsu, graphs, implementation	1700	x4717
17B	Hierarchy dfs and similar, dsu, greedy, shortest paths	1500	x4643
817D	Imbalanced Array data structures, divide and conquer, dsu, sortings	1900	x4579
60B	Serial Time! dfs and similar, dsu	1400	x4526
28B	pSort dfs and similar, dsu, graphs	1600	x4514

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