Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
09:54:33
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Before contest
Codeforces Round 941 (Div. 2)
09:54:32
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Problems

#	Name
569A	Music implementation, math	1500	x4739
909C	Python Indentation dp	1800	x4740
407A	Triangle brute force, geometry, implementation, math	1600	x4740
1305D	Kuroni and the Celebration constructive algorithms, dfs and similar, interactive, trees	1900	x4741
24A	Ring road graphs	1400	x4753
1383B	GameGame bitmasks, constructive algorithms, dp, games, greedy, math	1900	x4754
617C	Watering Flowers implementation	1600	x4757
713C	Sonya and Problem Wihtout a Legend dp, sortings	2300	x4758
1601B	Frog Traveler data structures, dfs and similar, dp, graphs, shortest paths, two pointers	1900	x4761
337C	Quiz binary search, greedy, math, matrices, number theory	1600	x4765
776D	The Door Problem 2-sat, dfs and similar, dsu, graphs	2000	x4779
837D	Round Subset dp, math	2100	x4780
1593D2	Half of Same brute force, math, number theory	1900	x4786
1244E	Minimizing Difference binary search, constructive algorithms, greedy, sortings, ternary search, two pointers	2000	x4789
1249D1	Too Many Segments (easy version) greedy	1800	x4799
68A	Irrational problem implementation, number theory	1100	x4799
44E	Anfisa the Monkey dp	1400	x4799
1060C	Maximum Subrectangle binary search, implementation, two pointers	1600	x4800
1651D	Nearest Excluded Points binary search, data structures, dfs and similar, graphs, shortest paths	1900	x4803
1343E	Weights Distributing brute force, graphs, greedy, shortest paths, sortings	2100	x4803
359D	Pair of Numbers binary search, brute force, data structures, math, two pointers	2000	x4811
53A	Autocomplete implementation	1100	x4819
933A	A Twisty Movement dp	1800	x4821
1153D	Serval and Rooted Tree binary search, dfs and similar, dp, greedy, trees	1900	x4826
1070K	Video Posts implementation	1100	x4826
1704D	Magical Array constructive algorithms, hashing, implementation, math	1900	x4834
1883G2	Dances (Hard Version) binary search, greedy, sortings, two pointers	1900	x4840
442B	Andrey and Problem greedy, math, probabilities	1800	x4845
600A	Extract Numbers implementation, strings	1600	x4846
312A	Whose sentence is it? implementation, strings	1100	x4846
1070D	Garbage Disposal greedy	1300	x4847
34D	Road Map dfs and similar, graphs	1600	x4847
1739D	Reset K Edges binary search, data structures, dfs and similar, graphs, greedy, trees	1900	x4850
1674F	Desktop Rearrangement data structures, greedy, implementation	1800	x4854
1304E	1-Trees and Queries data structures, dfs and similar, shortest paths, trees	2000	x4857
1148D	Dirty Deeds Done Dirt Cheap greedy, sortings	1800	x4858
255B	Code Parsing implementation	1200	x4860
1249D2	Too Many Segments (hard version) data structures, greedy, sortings	1800	x4863
1202D	Print a 1337-string... combinatorics, constructive algorithms, math, strings	1900	x4863
689C	Mike and Chocolate Thieves binary search, combinatorics, math	1700	x4864
1856E1	PermuTree (easy version) dfs and similar, dp, trees	1800	x4868
1898C	Colorful Grid constructive algorithms	1700	x4870
653B	Bear and Compressing brute force, dfs and similar, dp, strings	1300	x4875
214B	Hometask brute force, constructive algorithms, greedy, math	1600	x4879
1119E	Pavel and Triangles brute force, dp, fft, greedy, ternary search	1900	x4881
274B	Zero Tree dfs and similar, dp, greedy, trees	1800	x4884
1076D	Edge Deletion graphs, greedy, shortest paths	1800	x4889
1055B	Alice and Hairdresser dsu, implementation	1300	x4892
1715D	2+ doors 2-sat, bitmasks, graphs, greedy	1900	x4903
924A	Mystical Mosaic greedy, implementation	1300	x4904
803C	Maximal GCD constructive algorithms, greedy, math	1900	x4904
615B	Longtail Hedgehog dp, graphs	1600	x4904
1290B	Irreducible Anagrams binary search, constructive algorithms, data structures, strings, two pointers	1800	x4906
1213E	Two Small Strings brute force, constructive algorithms	1900	x4908
777D	Cloud of Hashtags binary search, greedy, implementation, strings	1800	x4909
216A	Tiling with Hexagons implementation, math	1200	x4909
143B	Help Kingdom of Far Far Away 2 implementation, strings	1200	x4910
1833G	Ksyusha and Chinchilla constructive algorithms, dfs and similar, dp, dsu, greedy, implementation, trees	1800	x4911
107A	Dorm Water Supply dfs and similar, graphs	1400	x4913
1391D	505 bitmasks, brute force, constructive algorithms, dp, greedy, implementation	2000	x4921
534C	Polycarpus' Dice math	1600	x4924
687C	The Values You Can Make dp	1900	x4926
479E	Riding in a Lift combinatorics, dp	1900	x4926
1485D	Multiples and Power Differences constructive algorithms, graphs, math, number theory	2200	x4929
1214D	Treasure Island dfs and similar, dp, flows, hashing	1900	x4929
74A	Room Leader implementation	1000	x4929
845B	Luba And The Ticket brute force, greedy, implementation	1600	x4930
1217D	Coloring Edges constructive algorithms, dfs and similar, graphs	2100	x4933
1882D	Tree XOR bitmasks, dfs and similar, dp, greedy, trees	1900	x4937
1670D	Very Suspicious binary search, brute force, geometry, greedy, implementation, math	1700	x4943
1439A2	Binary Table (Hard Version) constructive algorithms, graphs, greedy, implementation	1900	x4943
916C	Jamie and Interesting Graph constructive algorithms, graphs, shortest paths	1600	x4945
1032B	Personalized Cup	1200	x4946
1371E1	Asterism (Easy Version) binary search, brute force, combinatorics, math, number theory, sortings	1900	x4947
375B	Maximum Submatrix 2 data structures, dp, implementation, sortings	1600	x4949
1468K	The Robot brute force, implementation	1600	x4954
1843F1	Omsk Metro (simple version) data structures, dfs and similar, dp, graphs, greedy, math, trees	1800	x4957
1228D	Complete Tripartite brute force, constructive algorithms, graphs, hashing, implementation	1900	x4963
710E	Generate a String dfs and similar, dp	2000	x4964
1310A	Recommendations data structures, greedy, sortings	1700	x4965
923A	Primal Sport math, number theory	1700	x4965
1537E2	Erase and Extend (Hard Version) binary search, data structures, greedy, hashing, string suffix structures, strings, two pointers	2200	x4966
746D	Green and Black Tea constructive algorithms, greedy, math	1500	x4974
1716D	Chip Move brute force, dp, math	2000	x4975
1613E	Crazy Robot dfs and similar, graphs	2000	x4978
1718A2	Burenka and Traditions (hard version) data structures, dp, greedy	1900	x4979
710C	Magic Odd Square constructive algorithms, math	1500	x4980
1254A	Feeding Chicken constructive algorithms, greedy, implementation	1700	x4984
472D	Design Tutorial: Inverse the Problem dfs and similar, dsu, shortest paths, trees	1900	x4989
404C	Restore Graph dfs and similar, graphs, sortings	1800	x4993
1675F	Vlad and Unfinished Business dfs and similar, dp, greedy, trees	1800	x4994
568A	Primes or Palindromes? brute force, implementation, math, number theory	1600	x4998
204B	Little Elephant and Cards binary search, data structures	1500	x4999
1400E	Clear the Multiset data structures, divide and conquer, dp, greedy	2200	x5000
901A	Hashing Trees constructive algorithms, trees	1500	x5005
813A	The Contest implementation	1100	x5007
1148C	Crazy Diamond constructive algorithms, sortings	1700	x5013
630K	Indivisibility math, number theory	1500	x5015
1513D	GCD and MST constructive algorithms, dsu, graphs, greedy, number theory, sortings	2000	x5019
938D	Buy a Ticket data structures, graphs, shortest paths	2000	x5019