Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
10:53:38
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Before contest
Codeforces Round 941 (Div. 2)
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dsu

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Problems

#	Name
1620A	Equal or Not Equal constructive algorithms, dsu, implementation	800	x21185
217A	Ice Skating brute force, dfs and similar, dsu, graphs	1200	x20331
1249B1	Books Exchange (easy version) dsu, math	1000	x20079
977E	Cyclic Components dfs and similar, dsu, graphs	1500	x19142
1829E	The Lakes dfs and similar, dsu, graphs, implementation	1100	x18095
277A	Learning Languages dfs and similar, dsu	1400	x18071
1927D	Find the Different Ones! binary search, brute force, data structures, dp, dsu, greedy, two pointers	1300	x18056
1167C	News Distribution dfs and similar, dsu, graphs	1400	x16922
1249B2	Books Exchange (hard version) dfs and similar, dsu, math	1300	x16223
1365D	Solve The Maze constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, shortest paths	1700	x16090
1332C	K-Complete Word dfs and similar, dsu, greedy, implementation, strings	1500	x15572
501B	Misha and Changing Handles data structures, dsu, strings	1100	x15568
1592B	Hemose Shopping constructive algorithms, dsu, math, sortings	1200	x15557
771A	Bear and Friendship Condition dfs and similar, dsu, graphs	1500	x14591
1638C	Inversion Graph data structures, dsu, graphs, math	1300	x14338
1263D	Secret Passwords dfs and similar, dsu, graphs	1500	x13218
1559D1	Mocha and Diana (Easy Version) brute force, constructive algorithms, dsu, graphs, greedy, trees	1400	x13172
1292A	NEKO's Maze Game data structures, dsu, implementation	1400	x12930
356A	Knight Tournament data structures, dsu	1500	x12714
600E	Lomsat gelral data structures, dfs and similar, dsu, trees	2300	x12598
1534C	Little Alawn's Puzzle combinatorics, dp, dsu, graphs, math	1300	x12474
1702E	Split Into Two Sets dfs and similar, dsu, graphs	1600	x12266
1800E1	Unforgivable Curse (easy version) brute force, constructive algorithms, dsu, graphs, greedy, strings	1400	x12098
445B	DZY Loves Chemistry dfs and similar, dsu, greedy	1400	x12071
505B	Mr. Kitayuta's Colorful Graph dfs and similar, dp, dsu, graphs	1400	x12066
1800E2	Unforgivable Curse (hard version) brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, strings	1500	x11987
1139C	Edgy Trees dfs and similar, dsu, graphs, math, trees	1500	x11962
1726C	Jatayu's Balanced Bracket Sequence data structures, dsu, graphs, greedy	1300	x11851
755C	PolandBall and Forest dfs and similar, dsu, graphs, interactive, trees	1300	x11401
902B	Coloring a Tree dfs and similar, dsu, greedy	1200	x10450
1176E	Cover it! dfs and similar, dsu, graphs, shortest paths, trees	1700	x10411
25D	Roads not only in Berland dsu, graphs, trees	1900	x10303
1383A	String Transformation 1 dsu, graphs, greedy, sortings, strings, trees, two pointers	1700	x10226
1833E	Round Dance dfs and similar, dsu, graphs, shortest paths	1600	x10198
763A	Timofey and a tree dfs and similar, dp, dsu, graphs, implementation, trees	1600	x10081
1675E	Replace With the Previous, Minimize dsu, greedy, strings	1500	x10063
1909C	Heavy Intervals constructive algorithms, data structures, dsu, greedy, math, sortings	1400	x9873
1735C	Phase Shift dfs and similar, dsu, graphs, greedy, implementation, strings	1400	x9542
1670C	Where is the Pizza? data structures, dfs and similar, dsu, graphs, implementation, math	1400	x9480
1370D	Odd-Even Subsequence binary search, dp, dsu, greedy, implementation	2000	x9112
959B	Mahmoud and Ehab and the message dsu, greedy, implementation	1200	x9073
1253D	Harmonious Graph constructive algorithms, dfs and similar, dsu, graphs, greedy, sortings	1700	x8821
722C	Destroying Array data structures, dsu	1600	x8802
1209D	Cow and Snacks dfs and similar, dsu, graphs	1700	x8796
500B	New Year Permutation dfs and similar, dsu, graphs, greedy, math, sortings	1600	x8683
409H	A + B Strikes Back *special problem, brute force, constructive algorithms, dsu, implementation	1500	x8656
103B	Cthulhu dfs and similar, dsu, graphs	1500	x8511
1476D	Journey dfs and similar, dp, dsu, implementation	1700	x8377
1130C	Connect brute force, dfs and similar, dsu	1400	x8305
547B	Mike and Feet binary search, data structures, dp, dsu	1900	x8190
1411C	Peaceful Rooks dfs and similar, dsu, graphs	1700	x7755
1620E	Replace the Numbers constructive algorithms, data structures, dsu, implementation	1900	x7733
1779D	Boris and His Amazing Haircut constructive algorithms, data structures, dp, dsu, greedy, sortings	1700	x7459
1850H	The Third Letter dfs and similar, dsu, graphs, greedy, implementation	1700	x7450
515B	Drazil and His Happy Friends brute force, dsu, meet-in-the-middle, number theory	1300	x7357
659E	New Reform data structures, dfs and similar, dsu, graphs, greedy	1600	x7295
1845D	Rating System binary search, brute force, data structures, dp, dsu, greedy, math, two pointers	1800	x7284
939D	Love Rescue dfs and similar, dsu, graphs, greedy, strings	1600	x7098
1594D	The Number of Imposters constructive algorithms, dfs and similar, dp, dsu, graphs	1700	x7072
1242B	0-1 MST dfs and similar, dsu, graphs, sortings	1900	x6954
609E	Minimum spanning tree for each edge data structures, dfs and similar, dsu, graphs, trees	2100	x6910
1609D	Social Network dsu, graphs, greedy, implementation, trees	1600	x6899
1245D	Shichikuji and Power Grid dsu, graphs, greedy, shortest paths, trees	1900	x6867
723D	Lakes in Berland dfs and similar, dsu, graphs, greedy, implementation	1600	x6802
731C	Socks dfs and similar, dsu, graphs, greedy	1600	x6767
1213G	Path Queries divide and conquer, dsu, graphs, sortings, trees	1800	x6593
1873H	Mad City dfs and similar, dsu, games, graphs, shortest paths, trees	1700	x6520
1859D	Andrey and Escape from Capygrad binary search, data structures, dp, dsu, greedy, sortings	1800	x6509
1131F	Asya And Kittens constructive algorithms, dsu	1700	x6210
920F	SUM and REPLACE brute force, data structures, dsu, number theory	2000	x6191
490B	Queue dsu, implementation	1500	x5896
1095F	Make It Connected dsu, graphs, greedy	1900	x5829
1344B	Monopole Magnets constructive algorithms, dfs and similar, dsu, graphs	2000	x5772
920E	Connected Components? data structures, dfs and similar, dsu, graphs	2100	x5766
1872F	Selling a Menagerie dfs and similar, dsu, graphs, implementation, math	1800	x5752
698B	Fix a Tree constructive algorithms, dfs and similar, dsu, graphs, trees	1700	x5601
843A	Sorting by Subsequences dfs and similar, dsu, implementation, math, sortings	1400	x5522
1624G	MinOr Tree bitmasks, dfs and similar, dsu, graphs, greedy	1900	x5515
886C	Petya and Catacombs dsu, greedy, implementation, trees	1300	x5425
13E	Holes data structures, dsu	2700	x5331
371D	Vessels data structures, dsu, implementation, trees	1800	x5303
691D	Swaps in Permutation dfs and similar, dsu, math	1700	x5281
1922D	Berserk Monsters brute force, data structures, dsu, implementation, math	1900	x5145
741B	Arpa's weak amphitheater and Mehrdad's valuable Hoses dfs and similar, dp, dsu	1600	x5136
455C	Civilization dfs and similar, dp, dsu, ternary search, trees	2100	x5121
875B	Sorting the Coins dsu, implementation, sortings, two pointers	1500	x5114
1009F	Dominant Indices data structures, dsu, trees	2300	x5075
1920D	Array Repetition binary search, brute force, dsu, implementation, math	1900	x5055
1513D	GCD and MST constructive algorithms, dsu, graphs, greedy, number theory, sortings	2000	x5019
472D	Design Tutorial: Inverse the Problem dfs and similar, dsu, shortest paths, trees	1900	x4989
1833G	Ksyusha and Chinchilla constructive algorithms, dfs and similar, dp, dsu, greedy, implementation, trees	1800	x4911
1055B	Alice and Hairdresser dsu, implementation	1300	x4892
776D	The Door Problem 2-sat, dfs and similar, dsu, graphs	2000	x4779
1276B	Two Fairs combinatorics, dfs and similar, dsu, graphs	1900	x4663
17B	Hierarchy dfs and similar, dsu, greedy, shortest paths	1500	x4458
60B	Serial Time! dfs and similar, dsu	1400	x4432
28B	pSort dfs and similar, dsu, graphs	1600	x4391
817D	Imbalanced Array data structures, divide and conquer, dsu, sortings	1900	x4383
1442B	Identify the Operations combinatorics, data structures, dsu, greedy, implementation	1800	x4297
1857G	Counting Graphs combinatorics, divide and conquer, dsu, graphs, greedy, sortings, trees	2000	x4050

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