Problemset - Codeforces

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Problems

#	Name
1718B	Fibonacci Strings greedy, implementation, math, number theory	2000	x2989
1718A2	Burenka and Traditions (hard version) data structures, dp, greedy	1900	x5209
1718A1	Burenka and Traditions (easy version) dp, greedy	1800	x5734
1717F	Madoka and The First Session constructive algorithms, flows, graph matchings, graphs, implementation	2500	x527
1717E	Madoka and The Best University math, number theory	2200	x2700
1717D	Madoka and The Corruption Scheme combinatorics, constructive algorithms, greedy, math	1900	x4395
1717C	Madoka and Formal Statement greedy	1300	x14621
1717B	Madoka and Underground Competitions constructive algorithms, implementation	1100	x14721
1717A	Madoka and Strange Thoughts math, number theory	800	x19433
1716F	Bags with Balls combinatorics, dp, math, number theory	2500	x1042
1716E	Swap and Maximum Block bitmasks, data structures, dfs and similar, divide and conquer, dp	2500	x1086
1716D	Chip Move brute force, dp, math	2000	x5246
1716C	Robot in a Hallway data structures, dp, greedy, implementation, ternary search	2000	x4177
1716B	Permutation Chain constructive algorithms, math	800	x21390
1716A	2-3 Moves greedy, math	800	x32713
1715F	Crop Squares constructive algorithms, geometry, interactive, math	2700	x518
1715E	Long Way Home data structures, divide and conquer, dp, geometry, graphs, greedy, shortest paths	2400	x1712
1715D	2+ doors 2-sat, bitmasks, graphs, greedy	1900	x5116
1715C	Monoblock combinatorics, data structures, implementation, math	1700	x8605
1715B	Beautiful Array constructive algorithms, greedy, math	1000	x21725
1715A	Crossmarket constructive algorithms, greedy, math	800	x23496
1714G	Path Prefixes binary search, data structures, dfs and similar, trees	1700	x7537
1714F	Build a Tree and That Is It constructive algorithms, implementation, trees	1900	x3215
1714E	Add Modulo 10 brute force, math, number theory	1400	x16463
1714D	Color with Occurrences brute force, data structures, dp, greedy, strings	1600	x9040
1714C	Minimum Varied Number greedy	800	x30940
1714B	Remove Prefix data structures, greedy, implementation	800	x30165
1714A	Everyone Loves to Sleep implementation, math	900	x29600
1713F	Lost Array bitmasks, combinatorics, constructive algorithms, dp, math	2900	x533
1713E	Cross Swapping 2-sat, data structures, dsu, greedy, matrices	2400	x1648
1713D	Tournament Countdown constructive algorithms, greedy, interactive, number theory, probabilities	1800	x5667
1713C	Build Permutation constructive algorithms, dp, math	1200	x17303
1713B	Optimal Reduction constructive algorithms, sortings	1000	x21233
1713A	Traveling Salesman Problem geometry, greedy, implementation	800	x21968
1712F	Triameter binary search, data structures, dfs and similar, trees	3200	x313
1712E2	LCM Sum (hard version) brute force, data structures, math, number theory, two pointers	2500	x1260
1712E1	LCM Sum (easy version) binary search, brute force, combinatorics, math, number theory, two pointers	2300	x2141
1712D	Empty Graph binary search, constructive algorithms, data structures, greedy, shortest paths	2000	x4474
1712C	Sort Zero greedy, sortings	1100	x19749
1712B	Woeful Permutation constructive algorithms, greedy, number theory	800	x21546
1712A	Wonderful Permutation greedy, implementation	800	x24024
1711B	Party brute force, graphs	1300	x13388
1711A	Perfect Permutation constructive algorithms	800	x25120
1710E	Two Arrays binary search, games, graph matchings	2400	x505
1710D	Recover the Tree constructive algorithms, trees	3400	x418
1710C	XOR Triangle bitmasks, brute force, constructive algorithms, dp, greedy, math	2500	x1354
1710B	Rain binary search, brute force, data structures, geometry, greedy, implementation, math	2100	x2449
1710A	Color the Picture constructive algorithms, greedy, math	1500	x10875
1709F	Multiset of Strings bitmasks, brute force, dp, fft, flows, graphs, math, meet-in-the-middle, trees	2500	x549
1709E	XOR Tree bitmasks, data structures, dfs and similar, dsu, greedy, trees	2400	x2691
1709D	Rorororobot binary search, data structures, greedy, math	1700	x8380
1709C	Recover an RBS constructive algorithms, greedy, implementation, strings	1800	x8830
1709B	Also Try Minecraft data structures, dp, implementation	900	x22650
1709A	Three Doors brute force, greedy, implementation, math	800	x29551
1708B	Difference of GCDs constructive algorithms, math	1100	x20603
1708A	Difference Operations greedy, math	800	x21737
1707F	Bugaboo bitmasks, constructive algorithms, dp, number theory	3500	x150
1707E	Replace binary search, data structures	3500	x621
1707D	Partial Virtual Trees combinatorics, dfs and similar, dp, math, trees	3000	x616
1707C	DFS Trees dfs and similar, dsu, graphs, greedy, sortings, trees	2400	x1487
1707B	Difference Array brute force, data structures, implementation, sortings	1900	x5708
1707A	Doremy's IQ binary search, constructive algorithms, greedy, implementation	1600	x13513
1706E	Qpwoeirut and Vertices binary search, data structures, dfs and similar, divide and conquer, dsu, greedy, trees	2300	x2639
1706D2	Chopping Carrots (Hard Version) brute force, constructive algorithms, data structures, dp, greedy, math, number theory, two pointers	2400	x1696
1706D1	Chopping Carrots (Easy Version) binary search, brute force, constructive algorithms, greedy, number theory	1700	x6911
1706C	Qpwoeirut And The City dp, flows, greedy, implementation	1400	x14841
1706B	Making Towers dp, greedy, math	1100	x16520
1706A	Another String Minimization Problem 2-sat, constructive algorithms, greedy, string suffix structures, strings	800	x22917
1705F	Mark and the Online Exam bitmasks, constructive algorithms, interactive, probabilities	2900	x605
1705E	Mark and Professor Koro binary search, bitmasks, brute force, combinatorics, data structures, greedy	2300	x2066
1705D	Mark and Lightbulbs combinatorics, constructive algorithms, greedy, math, sortings	1800	x6317
1705C	Mark and His Unfinished Essay brute force, implementation	1400	x13315
1705B	Mark the Dust Sweeper constructive algorithms, greedy, implementation	900	x22922
1705A	Mark the Photographer greedy, sortings	800	x25220
1704H2	Game of AI (hard version) combinatorics, fft, math	3500	x84
1704H1	Game of AI (easy version) combinatorics, constructive algorithms, dp, fft, math	3200	x180
1704G	Mio and Lucky Array constructive algorithms, fft, math, strings	3500	x113
1704F	Colouring Game constructive algorithms, dp, games	2600	x1029
1704E	Count Seconds brute force, constructive algorithms, dp, graphs, implementation, math	2200	x2334
1704D	Magical Array constructive algorithms, hashing, implementation, math	1900	x5011
1704C	Virus greedy, implementation, sortings	1200	x15678
1704B	Luke is a Foodie brute force, greedy, implementation	1000	x17900
1704A	Two 0-1 Sequences constructive algorithms, greedy	800	x15982
1703G	Good Key, Bad Key bitmasks, brute force, dp, greedy, math	1600	x10591
1703F	Yet Another Problem About Pairs Satisfying an Inequality binary search, data structures, dp, greedy, sortings	1300	x19858
1703E	Mirror Grid implementation	1200	x18212
1703D	Double Strings brute force, data structures, strings	1100	x25507
1703C	Cypher brute force, implementation, strings	800	x35386
1703B	ICPC Balloons data structures, implementation	800	x48669
1703A	YES or YES? brute force, implementation, strings	800	x68501
1702G2	Passable Paths (hard version) data structures, dfs and similar, trees	2000	x4619
1702G1	Passable Paths (easy version) dfs and similar, trees	1900	x5409
1702F	Equate Multisets constructive algorithms, data structures, greedy, math, number theory	1700	x8349
1702E	Split Into Two Sets dfs and similar, dsu, graphs	1600	x13229
1702D	Not a Cheap String greedy	1000	x23626
1702C	Train and Queries data structures, greedy	1100	x22140
1702B	Polycarp Writes a String from Memory greedy	800	x27544
1702A	Round Down the Price constructive algorithms	800	x34690
1701F	Points combinatorics, data structures, implementation, math, matrices	2500	x921
1701E	Text Editor brute force, dp, greedy, strings	2500	x1122