Problemset - Codeforces

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Codeforces Round 978 (Div. 2)
6 days

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Problems

#	Name
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	x16621
1196A	Three Piles of Candies brute force, constructive algorithms, math	800	x27711
1195F	Geometers Anonymous Club data structures, geometry, math, sortings	2500	x891
1195E	OpenStreetMap data structures, two pointers	2100	x3130
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	x25933
1195B	Sport Mafia binary search, brute force, math	1000	x19729
1195A	Drinks Choosing greedy, math	1000	x13041
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	x6517
1194C	From S To T implementation, strings	1300	x13208
1194B	Yet Another Crosses Problem implementation	1300	x10310
1194A	Remove a Progression math	800	x16241
1191B	Tokitsukaze and Mahjong brute force, implementation	1200	x9607
1191A	Tokitsukaze and Enhancement brute force	800	x18139
1190F	Tokitsukaze and Powers number theory, probabilities	3400	x93
1190E	Tokitsukaze and Explosion binary search, greedy	3100	x226
1190D	Tokitsukaze and Strange Rectangle data structures, divide and conquer, sortings, two pointers	2000	x2275
1190C	Tokitsukaze and Duel brute force, games, greedy	2300	x2017
1190B	Tokitsukaze, CSL and Stone Game games	1800	x6442
1190A	Tokitsukaze and Discard Items implementation, two pointers	1400	x9365
1189C	Candies! data structures, dp, implementation, math	1400	x10581
1189B	Number Circle greedy, math, sortings	1100	x14231
1189A	Keanu Reeves strings	800	x15251
1188E	Problem from Red Panda combinatorics	3300	x231
1188D	Make Equal dp	3100	x697
1188C	Array Beauty dp	2500	x1773
1188B	Count Pairs math, matrices, number theory, two pointers	2300	x4521
1188A2	Add on a Tree: Revolution constructive algorithms, dfs and similar, implementation, trees	2500	x1238
1188A1	Add on a Tree trees	1600	x8405
1187G	Gang Up flows, graphs	2500	x570
1187F	Expected Square Beauty dp, math, probabilities	2500	x875
1187E	Tree Painting dfs and similar, dp, trees	2100	x8293
1187D	Subarray Sorting data structures, sortings	2400	x2625
1187C	Vasya And Array constructive algorithms, greedy, implementation	1800	x6363
1187B	Letters Shop binary search, implementation, strings	1300	x12237
1187A	Stickers and Toys math	900	x14868
1186F	Vus the Cossack and a Graph dfs and similar, graphs, greedy, implementation	2400	x781
1186E	Vus the Cossack and a Field divide and conquer, implementation, math	2500	x627
1186D	Vus the Cossack and Numbers constructive algorithms, greedy, math	1500	x8934
1186C	Vus the Cossack and Strings implementation, math	1800	x6113
1186A	Vus the Cossack and a Contest implementation	800	x37476
1185G2	Playlist for Polycarp (hard version) combinatorics, dp	2600	x766
1185G1	Playlist for Polycarp (easy version) bitmasks, combinatorics, dp	2100	x2875
1185F	Two Pizzas bitmasks, brute force	2100	x2041
1185E	Polycarp and Snakes brute force, implementation	2000	x2650
1185D	Extra Element implementation, math	1700	x6721
1185C2	Exam in BerSU (hard version) brute force, data structures, greedy, math	1700	x7458
1185C1	Exam in BerSU (easy version) greedy, sortings	1200	x11384
1185B	Email from Polycarp implementation, strings	1200	x13398
1185A	Ropewalkers math	800	x14883
1184E3	Daleks' Invasion (hard) data structures, dsu, graphs, trees	2400	x564
1184E2	Daleks' Invasion (medium) dfs and similar, graphs, shortest paths, trees	2100	x946
1184E1	Daleks' Invasion (easy) graphs, trees	1900	x1621
1184D2	Parallel Universes (Hard) math, matrices	3100	x106
1184D1	Parallel Universes (Easy) implementation	1600	x2530
1184C3	Heidi and the Turing Test (Hard)	3200	x41
1184C2	Heidi and the Turing Test (Medium) data structures	2200	x615
1184C1	Heidi and the Turing Test (Easy) implementation	1600	x2293
1184B3	The Doctor Meets Vader (Hard) flows, shortest paths	2700	x173
1184B2	The Doctor Meets Vader (Medium) flows, graph matchings, graphs, shortest paths, sortings	2200	x573
1184B1	The Doctor Meets Vader (Easy) binary search, sortings	1400	x5245
1184A3	Heidi Learns Hashing (Hard) fft, math, number theory	3100	x139
1184A2	Heidi Learns Hashing (Medium) brute force, number theory	2100	x985
1184A1	Heidi Learns Hashing (Easy) brute force, math, number theory	1200	x5950
1183H	Subsequences (hard version) dp, strings	1900	x3180
1183G	Candy Box (hard version) greedy, implementation, sortings	2000	x2367
1183F	Topforces Strikes Back brute force, math, sortings	2100	x2019
1183E	Subsequences (easy version) dp, graphs, implementation, shortest paths	2000	x4831
1183D	Candy Box (easy version) greedy, sortings	1400	x14315
1183C	Computer Game binary search, math	1400	x13971
1183B	Equalize Prices math	900	x18500
1183A	Nearest Interesting Number implementation	800	x24712
1182F	Maximum Sine binary search, data structures, number theory	2700	x341
1182E	Product Oriented Recurrence dp, math, matrices, number theory	2300	x2838
1182D	Complete Mirror constructive algorithms, dfs and similar, dp, hashing, implementation, trees	2400	x842
1182C	Beautiful Lyrics data structures, greedy, strings	1700	x4421
1182B	Plus from Picture dfs and similar, implementation, strings	1300	x11144
1182A	Filling Shapes dp, math	1000	x31020
1181E2	A Story of One Country (Hard) brute force, greedy, sortings	3000	x286
1181E1	A Story of One Country (Easy) brute force, divide and conquer, sortings	2500	x481
1181D	Irrigation binary search, data structures, implementation, sortings, trees, two pointers	2200	x2377
1181C	Flag brute force, combinatorics, dp, implementation	1900	x3134
1181B	Split a Number greedy, implementation, strings	1500	x6313