Problemset - Codeforces

Problems

#	Name
1717B	Madoka and Underground Competitions constructive algorithms, implementation	1100	x15050
1717A	Madoka and Strange Thoughts math, number theory	800	x19797
1716F	Bags with Balls combinatorics, dp, math, number theory	2500	x1117
1716E	Swap and Maximum Block bitmasks, data structures, dfs and similar, divide and conquer, dp	2500	x1173
1716D	Chip Move brute force, dp, math	2000	x5528
1716C	Robot in a Hallway data structures, dp, greedy, implementation, ternary search	2000	x4305
1716B	Permutation Chain constructive algorithms, math	800	x21575
1716A	2-3 Moves greedy, math	800	x33663
1715F	Crop Squares constructive algorithms, geometry, interactive, math	2700	x539
1715E	Long Way Home data structures, divide and conquer, dp, geometry, graphs, greedy, shortest paths	2400	x1821
1715D	2+ doors 2-sat, bitmasks, graphs, greedy	1900	x5327
1715C	Monoblock combinatorics, data structures, implementation, math	1700	x8894
1715B	Beautiful Array constructive algorithms, greedy, math	1000	x23704
1715A	Crossmarket constructive algorithms, greedy, math	800	x23755
1714G	Path Prefixes binary search, data structures, dfs and similar, trees	1700	x8055
1714F	Build a Tree and That Is It constructive algorithms, implementation, trees	1900	x3354
1714E	Add Modulo 10 brute force, math, number theory	1400	x17878
1714D	Color with Occurrences brute force, data structures, dp, greedy, strings	1600	x9425
1714C	Minimum Varied Number greedy	800	x31651
1714B	Remove Prefix data structures, greedy, implementation	800	x31108
1714A	Everyone Loves to Sleep implementation, math	900	x30590
1713F	Lost Array bitmasks, combinatorics, constructive algorithms, dp, math	2900	x564
1713E	Cross Swapping 2-sat, data structures, dsu, greedy, matrices	2400	x1775
1713D	Tournament Countdown constructive algorithms, greedy, interactive, number theory, probabilities	1800	x5835
1713C	Build Permutation constructive algorithms, dp, math	1200	x17810
1713B	Optimal Reduction constructive algorithms, sortings	1000	x21698
1713A	Traveling Salesman Problem geometry, greedy, implementation	800	x22207
1712F	Triameter binary search, data structures, dfs and similar, trees	3200	x343
1712E2	LCM Sum (hard version) brute force, data structures, math, number theory, two pointers	2500	x1421
1712E1	LCM Sum (easy version) binary search, brute force, combinatorics, math, number theory, two pointers	2300	x2250
1712D	Empty Graph binary search, constructive algorithms, data structures, greedy, shortest paths	2000	x4653
1712C	Sort Zero greedy, sortings	1100	x20332
1712B	Woeful Permutation constructive algorithms, greedy, number theory	800	x21843
1712A	Wonderful Permutation greedy, implementation	800	x24347
1711B	Party brute force, graphs	1300	x13718
1711A	Perfect Permutation constructive algorithms	800	x25497
1710E	Two Arrays binary search, games, graph matchings	2400	x538
1710D	Recover the Tree constructive algorithms, trees	3400	x501
1710C	XOR Triangle bitmasks, brute force, constructive algorithms, dp, greedy, math	2500	x1471
1710B	Rain binary search, brute force, data structures, geometry, greedy, implementation, math	2100	x2590
1710A	Color the Picture constructive algorithms, greedy, math	1500	x11262
1709F	Multiset of Strings bitmasks, brute force, dp, fft, flows, graphs, math, meet-in-the-middle, trees	2500	x591
1709E	XOR Tree bitmasks, data structures, dfs and similar, dsu, greedy, trees	2400	x2949
1709D	Rorororobot binary search, data structures, greedy, math	1700	x8759
1709C	Recover an RBS constructive algorithms, greedy, implementation, strings	1800	x9095
1709B	Also Try Minecraft data structures, dp, implementation	900	x23724
1709A	Three Doors brute force, greedy, implementation, math	800	x30160
1708B	Difference of GCDs constructive algorithms, math	1100	x21956
1708A	Difference Operations greedy, math	800	x21988
1707F	Bugaboo bitmasks, constructive algorithms, dp, number theory	3500	x161
1707E	Replace binary search, data structures	3500	x818
1707D	Partial Virtual Trees combinatorics, dfs and similar, dp, math, trees	3000	x701
1707C	DFS Trees dfs and similar, dsu, graphs, greedy, sortings, trees	2400	x1608
1707B	Difference Array brute force, data structures, implementation, sortings	1900	x5927
1707A	Doremy's IQ binary search, constructive algorithms, greedy, implementation	1600	x14112
1706E	Qpwoeirut and Vertices binary search, data structures, dfs and similar, divide and conquer, dsu, greedy, trees	2300	x2871
1706D2	Chopping Carrots (Hard Version) brute force, constructive algorithms, data structures, dp, greedy, math, number theory, two pointers	2400	x1787
1706D1	Chopping Carrots (Easy Version) binary search, brute force, constructive algorithms, greedy, number theory	1700	x7213
1706C	Qpwoeirut And The City dp, flows, greedy, implementation	1400	x15309
1706B	Making Towers dp, greedy, math	1100	x16833
1706A	Another String Minimization Problem 2-sat, constructive algorithms, greedy, string suffix structures, strings	800	x23263
1705F	Mark and the Online Exam bitmasks, constructive algorithms, interactive, probabilities	2900	x635
1705E	Mark and Professor Koro binary search, bitmasks, brute force, combinatorics, data structures, greedy	2300	x2159
1705D	Mark and Lightbulbs combinatorics, constructive algorithms, greedy, math, sortings	1800	x6529
1705C	Mark and His Unfinished Essay brute force, implementation	1400	x13690
1705B	Mark the Dust Sweeper constructive algorithms, greedy, implementation	900	x23647
1705A	Mark the Photographer greedy, sortings	800	x25850
1704H2	Game of AI (hard version) combinatorics, fft, math	3500	x96
1704H1	Game of AI (easy version) combinatorics, constructive algorithms, dp, fft, math	3200	x213
1704G	Mio and Lucky Array constructive algorithms, fft, math, strings	3500	x122
1704F	Colouring Game constructive algorithms, dp, games	2600	x1102
1704E	Count Seconds brute force, constructive algorithms, dp, graphs, implementation, math	2200	x2435
1704D	Magical Array constructive algorithms, hashing, implementation, math	1900	x5167
1704C	Virus greedy, implementation, sortings	1200	x17395
1704B	Luke is a Foodie brute force, greedy, implementation	1000	x20029
1704A	Two 0-1 Sequences constructive algorithms, greedy	800	x16211
1703G	Good Key, Bad Key bitmasks, brute force, dp, greedy, math	1600	x11289
1703F	Yet Another Problem About Pairs Satisfying an Inequality binary search, data structures, dp, greedy, sortings	1300	x21869
1703E	Mirror Grid implementation	1200	x20126
1703D	Double Strings brute force, data structures, strings	1100	x26691
1703C	Cypher brute force, implementation, strings	800	x37122
1703B	ICPC Balloons data structures, implementation	800	x53650
1703A	YES or YES? brute force, implementation, strings	800	x76800
1702G2	Passable Paths (hard version) data structures, dfs and similar, trees	2000	x4871
1702G1	Passable Paths (easy version) dfs and similar, trees	1900	x5638
1702F	Equate Multisets constructive algorithms, data structures, greedy, math, number theory	1700	x8677
1702E	Split Into Two Sets dfs and similar, dsu, graphs	1600	x14251
1702D	Not a Cheap String greedy	1000	x24277
1702C	Train and Queries data structures, greedy	1100	x23004
1702B	Polycarp Writes a String from Memory greedy	800	x28049
1702A	Round Down the Price constructive algorithms	800	x35743
1701F	Points combinatorics, data structures, implementation, math, matrices	2500	x973
1701E	Text Editor brute force, dp, greedy, strings	2500	x1173
1701D	Permutation Restoration binary search, data structures, greedy, math, sortings, two pointers	1900	x5822
1701C	Schedule Management binary search, greedy, implementation, two pointers	1400	x18259
1701B	Permutation greedy	800	x20362
1701A	Grass Field implementation	800	x26651
1700F	Puzzle constructive algorithms, dp, greedy	2600	x963
1700E	Serega the Pirate brute force, constructive algorithms	2600	x895
1700D	River Locks binary search, dp, greedy, math	1900	x6293