Problemset - Codeforces

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Codeforces Round 977 (Div. 2)
3 days
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Problems

#	Name
1190D	Tokitsukaze and Strange Rectangle data structures, divide and conquer, sortings, two pointers	2000	x2273
1190C	Tokitsukaze and Duel brute force, games, greedy	2300	x2017
1190B	Tokitsukaze, CSL and Stone Game games	1800	x6438
1190A	Tokitsukaze and Discard Items implementation, two pointers	1400	x9361
1189C	Candies! data structures, dp, implementation, math	1400	x10578
1189B	Number Circle greedy, math, sortings	1100	x14215
1189A	Keanu Reeves strings	800	x15248
1188E	Problem from Red Panda combinatorics	3300	x230
1188D	Make Equal dp	3100	x697
1188C	Array Beauty dp	2500	x1771
1188B	Count Pairs math, matrices, number theory, two pointers	2300	x4519
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	x874
1187E	Tree Painting dfs and similar, dp, trees	2100	x8282
1187D	Subarray Sorting data structures, sortings	2400	x2602
1187C	Vasya And Array constructive algorithms, greedy, implementation	1800	x6363
1187B	Letters Shop binary search, implementation, strings	1300	x12181
1187A	Stickers and Toys math	900	x14865
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	x6111
1186A	Vus the Cossack and a Contest implementation	800	x37432
1185G2	Playlist for Polycarp (hard version) combinatorics, dp	2600	x766
1185G1	Playlist for Polycarp (easy version) bitmasks, combinatorics, dp	2100	x2874
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	x7457
1185C1	Exam in BerSU (easy version) greedy, sortings	1200	x11383
1185B	Email from Polycarp implementation, strings	1200	x13392
1185A	Ropewalkers math	800	x14880
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	x1618
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	x5240
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	x5946
1183H	Subsequences (hard version) dp, strings	1900	x3179
1183G	Candy Box (hard version) greedy, implementation, sortings	2000	x2365
1183F	Topforces Strikes Back brute force, math, sortings	2100	x2016
1183E	Subsequences (easy version) dp, graphs, implementation, shortest paths	2000	x4823
1183D	Candy Box (easy version) greedy, sortings	1400	x14282
1183C	Computer Game binary search, math	1400	x13958
1183B	Equalize Prices math	900	x18495
1183A	Nearest Interesting Number implementation	800	x24678
1182F	Maximum Sine binary search, data structures, number theory	2700	x341
1182E	Product Oriented Recurrence dp, math, matrices, number theory	2300	x2811
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	x11140
1182A	Filling Shapes dp, math	1000	x30987
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	x480
1181D	Irrigation binary search, data structures, implementation, sortings, trees, two pointers	2200	x2372
1181C	Flag brute force, combinatorics, dp, implementation	1900	x3128
1181B	Split a Number greedy, implementation, strings	1500	x6311
1181A	Chunga-Changa greedy, math	1000	x13587
1180B	Nick and Array greedy, implementation	1500	x9549
1180A	Alex and a Rhombus dp, implementation, math	800	x25145
1179E	Alesya and Discrete Math divide and conquer, interactive	3200	x175
1179D	Fedor Runs for President data structures, dp, trees	2700	x832
1179C	Serge and Dining Room binary search, data structures, graph matchings, greedy, implementation, math, trees	2200	x2045
1179B	Tolik and His Uncle constructive algorithms	1800	x4372
1179A	Valeriy and Deque data structures, implementation	1500	x10514
1178H	Stock Exchange binary search, flows, graphs	3500	x230
1178G	The Awesomest Vertex data structures, dfs and similar	3000	x442
1178F2	Long Colorful Strip dp	2600	x894
1178F1	Short Colorful Strip combinatorics, dfs and similar, dp	2200	x2101
1178E	Archaeology brute force, constructive algorithms, greedy, strings	1900	x4319
1178D	Prime Graph constructive algorithms, greedy, math, number theory	1500	x7392
1178C	Tiles combinatorics, greedy, math	1300	x11928
1178B	WOW Factor dp, strings	1300	x15276
1178A	Prime Minister greedy	800	x10406
1177B	Digits Sequence (Hard Edition) binary search, divide and conquer, implementation	1800	x2567
1177A	Digits Sequence (Easy Edition) implementation	1000	x5688
1176F	Destroy it! dp, implementation, sortings	2100	x2038
1176E	Cover it! dfs and similar, dsu, graphs, shortest paths, trees	1700	x11046
1176D	Recover it! dfs and similar, graphs, greedy, number theory, sortings	1800	x5276
1176C	Lose it! dp, greedy, implementation	1300	x14204
1176B	Merge it! math	1100	x17104
1176A	Divide it! brute force, greedy, implementation	800	x22811
1175G	Yet Another Partiton Problem data structures, divide and conquer, dp, geometry, two pointers	3000	x489
1175F	The Number of Subpermutations brute force, data structures, divide and conquer, hashing, math	2500	x1855
1175E	Minimal Segment Cover data structures, dfs and similar, divide and conquer, dp, greedy, implementation, trees	2200	x3577
1175D	Array Splitting greedy, sortings	1900	x6199
1175C	Electrification binary search, brute force, greedy	1600	x6777
1175B	Catch Overflow! data structures, expression parsing, implementation	1600	x10639
1175A	From Hero to Zero implementation, math	900	x18208
1174F	Ehab and the Big Finale constructive algorithms, divide and conquer, graphs, implementation, interactive, trees	2400	x1721