Problemset - Codeforces

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Codeforces Round #581 (Div. 2)
01:32:12
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Problems

#	Name
1186E	Vus the Cossack and a Field divide and conquer, implementation, math	2500	x330
1186D	Vus the Cossack and Numbers constructive algorithms, greedy, math	1600	x4937
1186C	Vus the Cossack and Strings implementation, math	1800	x3539
1186A	Vus the Cossack and a Contest implementation	600	x10763
1185G2	Playlist for Polycarp (hard version) combinatorics, dp	2800	x314
1185G1	Playlist for Polycarp (easy version) bitmasks, combinatorics, dp	2100	x1283
1185F	Two Pizzas bitmasks, brute force	2200	x953
1185E	Polycarp and Snakes brute force, implementation	2000	x1572
1185D	Extra Element implementation, math	1700	x3733
1185C2	Exam in BerSU (hard version) brute force, data structures, greedy, math	1700	x4204
1185C1	Exam in BerSU (easy version) greedy, sortings	1200	x6998
1185B	Email from Polycarp implementation, strings	1200	x7461
1185A	Ropewalkers math	900	x9452
1184E3	Daleks' Invasion (hard) data structures, dsu, graphs, trees	2500	x237
1184E2	Daleks' Invasion (medium) dfs and similar, graphs, shortest paths, trees	2200	x520
1184E1	Daleks' Invasion (easy) graphs, trees	2000	x881
1184D2	Parallel Universes (Hard) math, matrices	3300	x17
1184D1	Parallel Universes (Easy) implementation	1600	x1462
1184C3	Heidi and the Turing Test (Hard)	3200	x20
1184C2	Heidi and the Turing Test (Medium) data structures	2300	x399
1184C1	Heidi and the Turing Test (Easy) implementation	1700	x1344
1184B3	The Doctor Meets Vader (Hard) flows, shortest paths	2700	x115
1184B2	The Doctor Meets Vader (Medium) flows, graph matchings, graphs, shortest paths, sortings	2300	x352
1184B1	The Doctor Meets Vader (Easy) binary search, sortings	1400	x1969
1184A3	Heidi Learns Hashing (Hard) fft, math, number theory	3100	x38
1184A2	Heidi Learns Hashing (Medium) brute force, number theory	2100	x642
1184A1	Heidi Learns Hashing (Easy) brute force, math, number theory	1200	x2658
1183H	Subsequences (hard version) dp, strings	2200	x1144
1183G	Candy Box (hard version) greedy, implementation, sortings	2100	x1176
1183F	Topforces Strikes Back brute force, math, sortings	2400	x867
1183E	Subsequences (easy version) dp, graphs, implementation, shortest paths	2000	x2102
1183D	Candy Box (easy version) greedy, sortings	1400	x6317
1183C	Computer Game binary search, math	1400	x6144
1183B	Equalize Prices math	1000	x9616
1183A	Nearest Interesting Number implementation	900	x11669
1182F	Maximum Sine binary search, data structures, number theory	2900	x142
1182E	Product Oriented Recurrence dp, math, matrices, number theory	2200	x1217
1182D	Complete Mirror constructive algorithms, dfs and similar, dp, hashing, implementation, trees	2500	x449
1182C	Beautiful Lyrics data structures, greedy, strings	1700	x3060
1182B	Plus from Picture dfs and similar, implementation, strings	1300	x6111
1182A	Filling Shapes dp, math	1000	x9389
1181E2	A Story of One Country (Hard) brute force, greedy, sortings	3000	x114
1181E1	A Story of One Country (Easy) brute force, divide and conquer, sortings	2600	x225
1181D	Irrigation binary search, data structures, implementation, sortings, trees, two pointers	2100	x987
1181C	Flag brute force, combinatorics, dp, implementation	1900	x1857
1181B	Split a Number greedy, implementation, strings	1500	x3769
1181A	Chunga-Changa greedy, math	1000	x7356
1180B	Nick and Array greedy, implementation	1500	x5027
1180A	Alex and a Rhombus dp, implementation, math	800	x9242
1179E	Alesya and Discrete Math divide and conquer, interactive	3200	x52
1179D	Fedor Runs for President data structures, dp, trees	2600	x304
1179C	Serge and Dining Room binary search, data structures, graph matchings, greedy, implementation, math, trees	2400	x889
1179B	Tolik and His Uncle constructive algorithms	1800	x2557
1179A	Valeriy and Deque data structures, implementation	1500	x5007
1178H	Stock Exchange binary search, flows, graphs	3500	x19
1178G	The Awesomest Vertex data structures, dfs and similar	2900	x104
1178F2	Long Colorful Strip dp	2600	x380
1178F1	Short Colorful Strip combinatorics, dfs and similar, dp	2200	x936
1178E	Archaeology brute force, constructive algorithms, greedy, strings	1900	x2474
1178D	Prime Graph constructive algorithms, greedy, math, number theory	1600	x3761
1178C	Tiles combinatorics, greedy, math	1300	x5536
1178B	WOW Factor dp, strings	1300	x5637
1178A	Prime Minister greedy	1100	x6757
1177B	Digits Sequence (Hard Edition) binary search, divide and conquer, implementation	1800	x910
1177A	Digits Sequence (Easy Edition) implementation	1100	x1786
1176F	Destroy it! dp, implementation, sortings	2500	x708
1176E	Cover it! dfs and similar, dsu, graphs, shortest paths, trees	1700	x3187
1176D	Recover it! dfs and similar, graphs, greedy, number theory, sortings	1900	x2314
1176C	Lose it! dp, greedy, implementation	1300	x6281
1176B	Merge it! math	1100	x8353
1176A	Divide it! brute force, greedy, implementation	800	x10095
1175G	Yet Another Partiton Problem data structures, divide and conquer, dp, geometry, two pointers	2700	x63
1175F	The Number of Subpermutations brute force, data structures, divide and conquer, hashing, math	2600	x419
1175E	Minimal Segment Cover data structures, dfs and similar, divide and conquer, dp, greedy, implementation, trees	2200	x1090
1175D	Array Splitting greedy, sortings	1900	x2591
1175C	Electrification binary search, brute force, greedy	1600	x3638
1175B	Catch Overflow! data structures, expression parsing, implementation	1600	x4923
1175A	From Hero to Zero implementation, math	1000	x8963
1174F	Ehab and the Big Finale constructive algorithms, divide and conquer, graphs, implementation, interactive, trees	2300	x629
1174E	Ehab and the Expected GCD Problem combinatorics, dp, math, number theory	2500	x525
1174D	Ehab and the Expected XOR Problem bitmasks, constructive algorithms	1900	x2567
1174C	Ehab and a Special Coloring Problem constructive algorithms, number theory	1300	x6349
1174B	Ehab Is an Odd Person sortings	1200	x7004
1174A	Ehab Fails to Be Thanos constructive algorithms, greedy, sortings	1000	x8542
1173B	Nauuo and Chess constructive algorithms, greedy	1100	x5727
1173A	Nauuo and Votes greedy	700	x8458
1172F	Nauuo and Bug data structures	3300	x45
1172E	Nauuo and ODT data structures	3300	x64
1172D	Nauuo and Portals constructive algorithms	2800	x210
1172C2	Nauuo and Pictures (hard version) dp, probabilities	2700	x323
1172C1	Nauuo and Pictures (easy version) dp, probabilities	2500	x531
1172B	Nauuo and Circle combinatorics, dfs and similar, dp, trees	2000	x2000
1172A	Nauuo and Cards greedy, implementation	1800	x2957
1170I	Good Subsets *special problem, dp		x15
1170H	Longest Saw *special problem, constructive algorithms		x21
1170G	Graph Decomposition *special problem, graphs		x39
1170F	Wheels *special problem, binary search, greedy		x73
1170E	Sliding Doors *special problem, binary search		x168
1170D	Decoding of Integer Sequences *special problem, data structures, implementation		x279
1170C	Minus and Minus Give Plus *special problem, implementation, strings		x528