Problemset - Codeforces

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Codeforces Round 978 (Div. 2)
6 days

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Problems

#	Name
1156G	Optimizer graphs, greedy, hashing, implementation	2700	x132
1156F	Card Bag dp, math, probabilities	2300	x1397
1156E	Special Segments of Permutation data structures, divide and conquer, dsu, two pointers	2200	x3020
1156D	0-1-Tree dfs and similar, divide and conquer, dp, dsu, trees	2200	x3901
1156C	Match Points binary search, greedy, sortings, ternary search, two pointers	2000	x6088
1156B	Ugly Pairs dfs and similar, greedy, implementation, sortings, strings	1800	x6222
1156A	Inscribed Figures geometry	1400	x8205
1155F	Delivery Oligopoly brute force, dp, graphs	2800	x419
1155E	Guess the Root brute force, interactive, math	2200	x1437
1155D	Beautiful Array brute force, data structures, divide and conquer, dp, greedy	1900	x6919
1155C	Alarm Clocks Everywhere math, number theory	1300	x9230
1155B	Game with Telephone Numbers games, greedy, implementation	1200	x11884
1155A	Reverse a Substring implementation, sortings, strings	1000	x15015
1154G	Minimum Possible LCM brute force, greedy, math, number theory	2200	x2744
1154F	Shovels Shop dp, greedy, sortings	2100	x2842
1154E	Two Teams data structures, implementation, sortings	1800	x6269
1154D	Walking Robot greedy	1500	x9952
1154C	Gourmet Cat implementation, math	1400	x10392
1154B	Make Them Equal math	1200	x16608
1154A	Restoring Three Numbers math	800	x70752
1153F	Serval and Bonus Problem combinatorics, dp, math, probabilities	2600	x798
1153E	Serval and Snake binary search, brute force, interactive	2200	x1500
1153D	Serval and Rooted Tree binary search, dfs and similar, dp, greedy, trees	1900	x4990
1153C	Serval and Parenthesis Sequence greedy, strings	1700	x7399
1153B	Serval and Toy Bricks constructive algorithms, greedy	1200	x9074
1153A	Serval and Bus brute force, math	1000	x11509
1152F2	Neko Rules the Catniverse (Large Version) bitmasks, dp, matrices	3000	x643
1152F1	Neko Rules the Catniverse (Small Version) bitmasks, dp, matrices	2800	x562
1152E	Neko and Flashback constructive algorithms, dfs and similar, graphs	2400	x976
1152D	Neko and Aki's Prank dp, greedy, trees	2100	x2418
1152C	Neko does Maths brute force, math, number theory	1800	x6667
1152B	Neko Performs Cat Furrier Transform bitmasks, constructive algorithms, dfs and similar, math	1300	x8929
1152A	Neko Finds Grapes greedy, implementation, math	800	x15151
1151F	Sonya and Informatics combinatorics, dp, matrices, probabilities	2300	x1221
1151E	Number of Components combinatorics, data structures, dp, math	2100	x3331
1151D	Stas and the Queue at the Buffet greedy, math, sortings	1600	x8418
1151C	Problem for Nazar constructive algorithms, math	1800	x5346
1151B	Dima and a Bad XOR bitmasks, brute force, constructive algorithms, dp	1600	x11178
1151A	Maxim and Biology brute force, strings	1000	x11209
1150B	Tiling Challenge greedy, implementation	900	x11298
1150A	Stock Arbitraging greedy, implementation	800	x11815
1149E	Election Promises games, graphs	3200	x524
1149D	Abandoning Roads brute force, dp, graphs, greedy	3000	x784
1149C	Tree Generator™ data structures, implementation, trees	2700	x1271
1149B	Three Religions dp, implementation, strings	2200	x1896
1149A	Prefix Sum Primes constructive algorithms, greedy, math, number theory	1200	x15198
1148H	Holy Diver data structures	3500	x257
1148G	Gold Experience constructive algorithms, graphs, math, number theory, probabilities	3300	x321
1148F	Foo Fighters bitmasks, constructive algorithms	2700	x1029
1148E	Earth Wind and Fire constructive algorithms, greedy, math, sortings, two pointers	2300	x1677
1148D	Dirty Deeds Done Dirt Cheap greedy, sortings	1800	x4972
1148C	Crazy Diamond constructive algorithms, sortings	1700	x5298
1148B	Born This Way binary search, brute force, two pointers	1600	x7384
1148A	Another One Bites The Dust greedy	800	x14875
1147F	Zigzag Game games, interactive	3500	x263
1147E	Rainbow Coins interactive	3000	x340
1147D	Palindrome XOR dfs and similar, graphs	2400	x749
1147C	Thanos Nim games	2000	x3257
1147B	Chladni Figure brute force, strings	1900	x2878
1147A	Hide and Seek graphs	1500	x5245
1146H	Satanic Panic dp, geometry	2900	x607
1146G	Zoning Restrictions dp, flows, graphs	2700	x821
1146F	Leaf Partition dp, trees	2500	x1180
1146E	Hot is Cold bitmasks, data structures, divide and conquer, implementation	2400	x893
1146D	Frog Jumping dfs and similar, math, number theory	2100	x1102
1146C	Tree Diameter bitmasks, graphs, interactive	1700	x3689
1146B	Hate "A" implementation, strings	1100	x8585
1146A	Love "A" implementation, strings	800	x21867
1144G	Two Merged Sequences dp, greedy	2400	x1977
1144F	Graph Without Long Directed Paths dfs and similar, graphs	1700	x11625
1144E	Median String bitmasks, math, number theory, strings	1900	x4154
1144D	Equalize Them All constructive algorithms, greedy	1400	x10268
1144C	Two Shuffled Sequences constructive algorithms, sortings	1000	x15344
1144B	Parity Alternated Deletions greedy, implementation, sortings	900	x17073
1144A	Diverse Strings implementation, strings	800	x19244
1143C	Queen dfs and similar, trees	1400	x12408
1143B	Nirvana brute force, math, number theory	1200	x10510
1143A	The Doors implementation	800	x13264
1142E	Pink Floyd graphs, interactive	3200	x511
1142D	Foreigner dp	2800	x502
1142C	U2 geometry	2400	x1361
1142B	Lynyrd Skynyrd data structures, dfs and similar, dp, math, trees	2000	x2982
1142A	The Beatles brute force, math	1700	x3422
1141G	Privatization of Roads in Treeland binary search, constructive algorithms, dfs and similar, graphs, greedy, trees	1900	x2274
1141F2	Same Sum Blocks (Hard) data structures, greedy	1900	x4198
1141F1	Same Sum Blocks (Easy) greedy	1900	x3861
1141E	Superhero Battle math	1700	x6739
1141D	Colored Boots greedy, implementation	1500	x8534
1141C	Polycarp Restores Permutation math	1500	x11451
1141B	Maximal Continuous Rest implementation	900	x21301
1141A	Game 23 implementation, math	1000	x31841
1140G	Double Tree data structures, divide and conquer, shortest paths, trees	2700	x497
1140F	Extending Set of Points data structures, divide and conquer, dsu	2600	x1211
1140E	Palindrome-less Arrays combinatorics, divide and conquer, dp	2200	x1940
1140D	Minimum Triangulation dp, greedy, math	1200	x12589
1140C	Playlist brute force, data structures, sortings	1600	x9558
1140B	Good String implementation, strings	1200	x11311
1140A	Detective Book implementation	1000	x12294
1139F	Dish Shopping data structures, divide and conquer	2500	x436
1139E	Maximize Mex flows, graph matchings, graphs	2400	x1811