Problemset - Codeforces

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Codeforces Round #672 (Div. 2)
3 days

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Difficulty: —

dsu

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Problems

#	Name
1249B1	Books Exchange (easy version) dsu, math	1000	x13236
217A	Ice Skating brute force, dfs and similar, dsu, graphs	1200	x12001
277A	Learning Languages dfs and similar, dsu	1400	x10602
1332C	K-Complete Word dfs and similar, dsu, greedy, implementation, strings	1500	x10400
1249B2	Books Exchange (hard version) dfs and similar, dsu, math	1300	x10131
1292A	NEKO's Maze Game data structures, dsu, implementation	1400	x9637
501B	Misha and Changing Handles data structures, dsu, strings	1100	x9290
977E	Cyclic Components dfs and similar, dsu, graphs	1500	x8837
1365D	Solve The Maze constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, shortest paths	1700	x8665
1167C	News Distribution dfs and similar, dsu, graphs	1400	x8477
771A	Bear and Friendship Condition dfs and similar, dsu, graphs	1500	x8470
1263D	Secret Passwords dfs and similar, dsu, graphs	1500	x7257
1139C	Edgy Trees dfs and similar, dsu, graphs, math, trees	1500	x7234
356A	Knight Tournament data structures, dsu	1500	x7200
505B	Mr. Kitayuta's Colorful Graph dfs and similar, dp, dsu, graphs	1400	x7146
1383A	String Transformation 1 dsu, graphs, greedy, sortings, strings, trees, two pointers	1700	x7097
445B	DZY Loves Chemistry dfs and similar, dsu, greedy	1400	x7033
902B	Coloring a Tree dfs and similar, dsu, greedy	1200	x6951
763A	Timofey and a tree dfs and similar, dp, dsu, graphs, implementation, trees	1600	x6908
500B	New Year Permutation dfs and similar, dsu, graphs, greedy, math, sortings	1600	x6639
755C	PolandBall and Forest dfs and similar, dsu, graphs, interactive, trees	1300	x6620
959B	Mahmoud and Ehab and the message dsu, greedy, implementation	1200	x6378
515B	Drazil and His Happy Friends brute force, dsu, meet-in-the-middle, number theory	1300	x6013
1370D	Odd-Even Subsequence binary search, dp, dsu, greedy, implementation	2000	x5801
1130C	Connect brute force, dfs and similar, dsu	1400	x5695
1253D	Harmonious Graph constructive algorithms, dfs and similar, dsu, graphs, greedy, sortings	1700	x5496
103B	Cthulhu dfs and similar, dsu, graphs	1500	x5451
659E	New Reform data structures, dfs and similar, dsu, graphs, greedy	1600	x5241
409H	A + B Strikes Back *special problem, brute force, constructive algorithms, dsu, implementation	1500	x5196
722C	Destroying Array data structures, dsu	1600	x5172
1176E	Cover it! dfs and similar, dsu, graphs, shortest paths, trees	1700	x5146
723D	Lakes in Berland dfs and similar, dsu, graphs, greedy, implementation	1600	x5064
1209D	Cow and Snacks dfs and similar, dsu, graphs	1700	x5054
547B	Mike and Feet binary search, data structures, dp, dsu	1900	x4846
731C	Socks dfs and similar, dsu, graphs, greedy	1600	x4803
490B	Queue dsu, implementation	1500	x4599
939D	Love Rescue dfs and similar, dsu, graphs, greedy, strings	1600	x4582
886C	Petya and Catacombs dsu, greedy, implementation, trees	1300	x4573
25D	Roads not only in Berland dsu, graphs, trees	1900	x4482
1344B	Monopole Magnets constructive algorithms, dfs and similar, dsu, graphs	2000	x4444
843A	Sorting by Subsequences dfs and similar, dsu, implementation, math, sortings	1400	x4416
600E	Lomsat gelral data structures, dfs and similar, dsu, trees	2300	x4342
875B	Sorting the Coins dsu, implementation, sortings, two pointers	1500	x4320
698B	Fix a Tree constructive algorithms, dfs and similar, dsu, graphs, trees	1700	x4138
1131F	Asya And Kittens constructive algorithms, dsu	1700	x4097
741B	Arpa's weak amphitheater and Mehrdad's valuable Hoses dfs and similar, dp, dsu	1600	x3954
1242B	0-1 MST dfs and similar, dsu, graphs, sortings	1900	x3945
1245D	Shichikuji and Power Grid dsu, graphs, greedy, shortest paths, trees	1900	x3636
455C	Civilization dfs and similar, dp, dsu, ternary search, trees	2100	x3535
1055B	Alice and Hairdresser dsu, implementation	1300	x3515
371D	Vessels data structures, dsu, implementation, trees	1800	x3308
1213G	Path Queries divide and conquer, dsu, graphs, sortings, trees	1800	x3248
472D	Design Tutorial: Inverse the Problem dfs and similar, dsu, shortest paths, trees	1900	x3032
1276B	Two Fairs combinatorics, dfs and similar, dsu, graphs	1900	x2985
609E	Minimum spanning tree for each edge data structures, dfs and similar, dsu, graphs, trees	2100	x2971
691D	Swaps in Permutation dfs and similar, dsu, math	1700	x2939
60B	Serial Time! dfs and similar, dsu	1400	x2927
920F	SUM and REPLACE brute force, data structures, dsu, number theory	2000	x2880
1095F	Make It Connected dsu, graphs, greedy	1900	x2872
776D	The Door Problem 2-sat, dfs and similar, dsu, graphs	2000	x2813
468B	Two Sets 2-sat, dfs and similar, dsu, graph matchings, greedy	2000	x2765
920E	Connected Components? data structures, dfs and similar, dsu, graphs	2100	x2758
1012B	Chemical table constructive algorithms, dfs and similar, dsu, graphs, matrices	1900	x2638
670E	Correct Bracket Sequence Editor data structures, dsu, strings	1700	x2560
1081D	Maximum Distance dsu, graphs, shortest paths, sortings	1800	x2472
1278D	Segment Tree data structures, dsu, graphs, trees	2100	x2426
437D	The Child and Zoo dsu, sortings	1900	x2351
28B	pSort dfs and similar, dsu, graphs	1600	x2315
17B	Hierarchy dfs and similar, dsu, greedy, shortest paths	1500	x2275
1131D	Gourmet choice dfs and similar, dp, dsu, graphs, greedy	2000	x2225
766D	Mahmoud and a Dictionary data structures, dfs and similar, dp, dsu, graphs	2000	x2168
817D	Imbalanced Array data structures, divide and conquer, dsu, sortings	1900	x2160
436C	Dungeons and Candies dsu, graphs, greedy, trees	1800	x2153
765D	Artsem and Saunders constructive algorithms, dsu, math	1700	x2131
603B	Moodular Arithmetic combinatorics, dfs and similar, dsu, math, number theory	1800	x2086
13E	Holes data structures, dsu	2700	x2075
400D	Dima and Bacteria dsu, graphs, shortest paths	2000	x2057
109C	Lucky Tree dp, dsu, trees	1900	x1931
1156D	0-1-Tree dfs and similar, divide and conquer, dp, dsu, trees	2200	x1926
6E	Exposition binary search, data structures, dsu, trees, two pointers	1900	x1903
1209G1	Into Blocks (easy version) data structures, dsu, greedy, implementation, two pointers	2000	x1902
788B	Weird journey combinatorics, constructive algorithms, dfs and similar, dsu, graphs	2100	x1741
1133F2	Spanning Tree with One Fixed Degree constructive algorithms, dfs and similar, dsu, graphs, greedy	1900	x1706
566D	Restructuring Company data structures, dsu	1900	x1706
1009F	Dominant Indices data structures, dsu, trees	2300	x1691
982D	Shark brute force, data structures, dsu, trees	1900	x1679
292D	Connected Components data structures, dfs and similar, dp, dsu	1900	x1625
1220E	Tourism dfs and similar, dp, dsu, graphs, greedy, trees	2200	x1621
899E	Segments Removal data structures, dsu, flows, implementation, two pointers	2000	x1563
228E	The Road to Berland is Paved With Good Intentions 2-sat, dfs and similar, dsu, graphs	1900	x1543
177C2	Party brute force, dfs and similar, dsu, graphs	1500	x1522
1213F	Unstable String Sort data structures, dfs and similar, dsu, graphs, greedy, implementation, strings	2100	x1499
650C	Table Compression dfs and similar, dp, dsu, graphs, greedy	2200	x1491
1108F	MST Unification binary search, dsu, graphs, greedy	2100	x1474
177C1	Party dfs and similar, dsu, graphs	1500	x1466
27D	Ring Road 2 2-sat, dfs and similar, dsu, graphs	2200	x1466
1156E	Special Segments of Permutation data structures, divide and conquer, dsu, two pointers	2200	x1462
1335F	Robots on a Grid data structures, dfs and similar, dsu, graphs, greedy, matrices	2200	x1413
553C	Love Triangles dfs and similar, dsu, graphs	2200	x1378
659F	Polycarp and Hay dfs and similar, dsu, graphs, greedy, sortings	2000	x1365

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