Problemset - Codeforces

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Codeforces Round 978 (Div. 2)
5 days

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Problems

#	Name
1209G1	Into Blocks (easy version) data structures, dsu, greedy, implementation, two pointers	2000	x3219
1209F	Koala and Notebook data structures, dfs and similar, graphs, shortest paths, strings, trees	2600	x1150
1209E2	Rotate Columns (hard version) bitmasks, dp, greedy, sortings	2500	x1969
1209E1	Rotate Columns (easy version) bitmasks, brute force, dp, greedy, sortings	2000	x2969
1209D	Cow and Snacks dfs and similar, dsu, graphs	1700	x9286
1209C	Paint the Digits constructive algorithms, greedy, implementation	1500	x7497
1209B	Koala and Lights implementation, math, number theory	1300	x8164
1209A	Paint the Numbers greedy, implementation, math	800	x12200
1208H	Red Blue Tree data structures, implementation, trees	3500	x152
1208G	Polygons greedy, math, number theory	2800	x765
1208F	Bits And Pieces bitmasks, dfs and similar, dp, greedy	2600	x2464
1208E	Let Them Slide data structures, implementation	2200	x2034
1208D	Restore Permutation binary search, data structures, greedy, implementation	1900	x4903
1208C	Magic Grid constructive algorithms	1800	x6022
1208B	Uniqueness binary search, brute force, implementation, two pointers	1500	x10451
1208A	XORinacci math	900	x16783
1207G	Indie Album data structures, dfs and similar, hashing, string suffix structures, strings, trees	2700	x1027
1207F	Remainder Problem brute force, data structures, implementation	2100	x5251
1207E	XOR Guessing bitmasks, interactive, math	1900	x5957
1207D	Number Of Permutations combinatorics	1800	x6081
1207C	Gas Pipeline dp, greedy	1500	x9861
1207B	Square Filling constructive algorithms, greedy, implementation	1200	x13259
1207A	There Are Two Types Of Burgers brute force, greedy, implementation, math	800	x21767
1206B	Make Product Equal One dp, implementation	900	x26913
1206A	Choose Two Numbers math, sortings	800	x24400
1205F	Beauty of a Permutation constructive algorithms, math	3400	x123
1205E	Expected Value Again combinatorics, strings	3100	x283
1205D	Almost All constructive algorithms, trees	2700	x657
1205C	Palindromic Paths implementation, interactive	2400	x1173
1205B	Shortest Cycle bitmasks, brute force, graphs, shortest paths	1900	x6669
1205A	Almost Equal constructive algorithms, greedy, math	1200	x14143
1204E	Natasha, Sasha and the Prefix Sums combinatorics, dp, math, number theory	2300	x1669
1204D2	Kirk and a Binary String (hard version) data structures, greedy, math, strings	2100	x3238
1204D1	Kirk and a Binary String (easy version) brute force, greedy, strings	2000	x3072
1204C	Anna, Svyatoslav and Maps dp, graphs, greedy, shortest paths	1700	x6680
1204B	Mislove Has Lost an Array greedy, math	900	x17523
1204A	BowWow and the Timetable math	1000	x20874
1203F2	Complete the Projects (hard version) dp, greedy	2300	x2888
1203F1	Complete the Projects (easy version) greedy	2100	x3547
1203E	Boxers greedy, sortings	1500	x13831
1203D2	Remove the Substring (hard version) binary search, greedy, implementation, two pointers	1700	x7393
1203D1	Remove the Substring (easy version) greedy, implementation	1600	x8765
1203C	Common Divisors implementation, math	1300	x20617
1203B	Equal Rectangles greedy, math	1200	x15983
1203A	Circle of Students implementation	1000	x16694
1202F	You Are Given Some Letters... binary search, implementation, math	2700	x399
1202E	You Are Given Some Strings... brute force, string suffix structures, strings	2400	x2114
1202D	Print a 1337-string... combinatorics, constructive algorithms, math, strings	1900	x5104
1202C	You Are Given a WASD-string... brute force, data structures, dp, greedy, implementation, math, strings	2100	x2545
1202B	You Are Given a Decimal String... brute force, dp, shortest paths	1700	x4565
1202A	You Are Given Two Binary Strings... bitmasks, greedy	1100	x9355
1201E2	Knightmare (hard) graphs, interactive, shortest paths	3000	x147
1201E1	Knightmare (easy) graphs, interactive, shortest paths	2900	x132
1201D	Treasure Hunting binary search, dp, greedy, implementation	2100	x2361
1201C	Maximum Median binary search, greedy, math, sortings	1400	x23643
1201B	Zero Array greedy, math	1500	x18835
1201A	Important Exam implementation, strings	900	x15663
1200F	Graph Traveler brute force, data structures, dfs and similar, dp, graphs, implementation, math, number theory	2300	x1073
1200E	Compress Words brute force, hashing, implementation, string suffix structures, strings	2000	x7656
1200D	White Lines brute force, data structures, dp, implementation, two pointers	1900	x4128
1200C	Round Corridor math, number theory	1400	x9869
1200B	Block Adventure dp, greedy	1200	x13974
1200A	Hotelier brute force, data structures, implementation	800	x20348
1199B	Water Lily geometry, math	1000	x20480
1199A	City Day implementation	1000	x14844
1198F	GCD Groups 2 greedy, number theory, probabilities	2900	x880
1198E	Rectangle Painting 2 flows, graph matchings, graphs	2500	x1180
1198D	Rectangle Painting 1 dp	2300	x3264
1198C	Matching vs Independent Set constructive algorithms, graphs, greedy, sortings	2000	x3572
1198B	Welfare State binary search, brute force, data structures, sortings	1600	x9455
1198A	MP3 sortings, two pointers	1600	x9015
1197F	Coloring Game dp, games, matrices	2700	x258
1197E	Culture Code binary search, combinatorics, data structures, dp, shortest paths, sortings	2300	x1677
1197D	Yet Another Subarray Problem dp, greedy, math	1900	x5389
1197C	Array Splitting greedy, sortings	1400	x13903
1197B	Pillars greedy, implementation	1000	x13810
1197A	DIY Wooden Ladder greedy, math, sortings	900	x13521
1196F	K-th Path brute force, constructive algorithms, shortest paths, sortings	2200	x2640
1196E	Connected Component on a Chessboard constructive algorithms, implementation	1800	x3736
1196D2	RGB Substring (hard version) data structures, dp, implementation, two pointers	1600	x9726
1196D1	RGB Substring (easy version) implementation	1500	x10539
1196C	Robot Breakout implementation	1500	x9342
1196B	Odd Sum Segments constructive algorithms, math	1200	x16622
1196A	Three Piles of Candies brute force, constructive algorithms, math	800	x27712
1195F	Geometers Anonymous Club data structures, geometry, math, sortings	2500	x891
1195E	OpenStreetMap data structures, two pointers	2100	x3131
1195D2	Submarine in the Rybinsk Sea (hard edition) combinatorics, math, number theory	1800	x4661
1195D1	Submarine in the Rybinsk Sea (easy edition) combinatorics, math, number theory	1500	x7887
1195C	Basketball Exercise dp	1400	x25935
1195B	Sport Mafia binary search, brute force, math	1000	x19729
1195A	Drinks Choosing greedy, math	1000	x13042
1194G	Another Meme Problem dp	2700	x259
1194F	Crossword Expert combinatorics, dp, number theory, probabilities, two pointers	2400	x994
1194E	Count The Rectangles bitmasks, brute force, data structures, geometry, sortings	2200	x1923
1194D	1-2-K Game games, math	1700	x6518
1194C	From S To T implementation, strings	1300	x13209
1194B	Yet Another Crosses Problem implementation	1300	x10310
1194A	Remove a Progression math	800	x16241
1193C	Scissors and Tape *special problem, constructive algorithms, geometry		x38
1193B	Magic Tree *special problem, data structures, dp, trees		x438