Problemset - Codeforces

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Problems

#	Name
1715C	Monoblock combinatorics, data structures, implementation, math	1700	x8704
1715B	Beautiful Array constructive algorithms, greedy, math	1000	x22300
1715A	Crossmarket constructive algorithms, greedy, math	800	x23599
1714G	Path Prefixes binary search, data structures, dfs and similar, trees	1700	x7701
1714F	Build a Tree and That Is It constructive algorithms, implementation, trees	1900	x3279
1714E	Add Modulo 10 brute force, math, number theory	1400	x16883
1714D	Color with Occurrences brute force, data structures, dp, greedy, strings	1600	x9169
1714C	Minimum Varied Number greedy	800	x31187
1714B	Remove Prefix data structures, greedy, implementation	800	x30627
1714A	Everyone Loves to Sleep implementation, math	900	x29914
1713F	Lost Array bitmasks, combinatorics, constructive algorithms, dp, math	2900	x545
1713E	Cross Swapping 2-sat, data structures, dsu, greedy, matrices	2400	x1709
1713D	Tournament Countdown constructive algorithms, greedy, interactive, number theory, probabilities	1800	x5722
1713C	Build Permutation constructive algorithms, dp, math	1200	x17478
1713B	Optimal Reduction constructive algorithms, sortings	1000	x21403
1713A	Traveling Salesman Problem geometry, greedy, implementation	800	x22038
1712F	Triameter binary search, data structures, dfs and similar, trees	3200	x331
1712E2	LCM Sum (hard version) brute force, data structures, math, number theory, two pointers	2500	x1362
1712E1	LCM Sum (easy version) binary search, brute force, combinatorics, math, number theory, two pointers	2300	x2193
1712D	Empty Graph binary search, constructive algorithms, data structures, greedy, shortest paths	2000	x4572
1712C	Sort Zero greedy, sortings	1100	x19940
1712B	Woeful Permutation constructive algorithms, greedy, number theory	800	x21658
1712A	Wonderful Permutation greedy, implementation	800	x24155
1711B	Party brute force, graphs	1300	x13453
1711A	Perfect Permutation constructive algorithms	800	x25251
1710E	Two Arrays binary search, games, graph matchings	2400	x507
1710D	Recover the Tree constructive algorithms, trees	3400	x422
1710C	XOR Triangle bitmasks, brute force, constructive algorithms, dp, greedy, math	2500	x1392
1710B	Rain binary search, brute force, data structures, geometry, greedy, implementation, math	2100	x2496
1710A	Color the Picture constructive algorithms, greedy, math	1500	x10968
1709F	Multiset of Strings bitmasks, brute force, dp, fft, flows, graphs, math, meet-in-the-middle, trees	2500	x557
1709E	XOR Tree bitmasks, data structures, dfs and similar, dsu, greedy, trees	2400	x2777
1709D	Rorororobot binary search, data structures, greedy, math	1700	x8483
1709C	Recover an RBS constructive algorithms, greedy, implementation, strings	1800	x8915
1709B	Also Try Minecraft data structures, dp, implementation	900	x22930
1709A	Three Doors brute force, greedy, implementation, math	800	x29740
1708B	Difference of GCDs constructive algorithms, math	1100	x20999
1708A	Difference Operations greedy, math	800	x21832
1707F	Bugaboo bitmasks, constructive algorithms, dp, number theory	3500	x154
1707E	Replace binary search, data structures	3500	x726
1707D	Partial Virtual Trees combinatorics, dfs and similar, dp, math, trees	3000	x656
1707C	DFS Trees dfs and similar, dsu, graphs, greedy, sortings, trees	2400	x1539
1707B	Difference Array brute force, data structures, implementation, sortings	1900	x5793
1707A	Doremy's IQ binary search, constructive algorithms, greedy, implementation	1600	x13728
1706E	Qpwoeirut and Vertices binary search, data structures, dfs and similar, divide and conquer, dsu, greedy, trees	2300	x2771
1706D2	Chopping Carrots (Hard Version) brute force, constructive algorithms, data structures, dp, greedy, math, number theory, two pointers	2400	x1722
1706D1	Chopping Carrots (Easy Version) binary search, brute force, constructive algorithms, greedy, number theory	1700	x7031
1706C	Qpwoeirut And The City dp, flows, greedy, implementation	1400	x14991
1706B	Making Towers dp, greedy, math	1100	x16618
1706A	Another String Minimization Problem 2-sat, constructive algorithms, greedy, string suffix structures, strings	800	x23042
1705F	Mark and the Online Exam bitmasks, constructive algorithms, interactive, probabilities	2900	x617
1705E	Mark and Professor Koro binary search, bitmasks, brute force, combinatorics, data structures, greedy	2300	x2107
1705D	Mark and Lightbulbs combinatorics, constructive algorithms, greedy, math, sortings	1800	x6378
1705C	Mark and His Unfinished Essay brute force, implementation	1400	x13413
1705B	Mark the Dust Sweeper constructive algorithms, greedy, implementation	900	x23114
1705A	Mark the Photographer greedy, sortings	800	x25336
1704H2	Game of AI (hard version) combinatorics, fft, math	3500	x93
1704H1	Game of AI (easy version) combinatorics, constructive algorithms, dp, fft, math	3200	x186
1704G	Mio and Lucky Array constructive algorithms, fft, math, strings	3500	x114
1704F	Colouring Game constructive algorithms, dp, games	2600	x1062
1704E	Count Seconds brute force, constructive algorithms, dp, graphs, implementation, math	2200	x2377
1704D	Magical Array constructive algorithms, hashing, implementation, math	1900	x5058
1704C	Virus greedy, implementation, sortings	1200	x16143
1704B	Luke is a Foodie brute force, greedy, implementation	1000	x18492
1704A	Two 0-1 Sequences constructive algorithms, greedy	800	x16050
1703G	Good Key, Bad Key bitmasks, brute force, dp, greedy, math	1600	x10827
1703F	Yet Another Problem About Pairs Satisfying an Inequality binary search, data structures, dp, greedy, sortings	1300	x20448
1703E	Mirror Grid implementation	1200	x18726
1703D	Double Strings brute force, data structures, strings	1100	x25915
1703C	Cypher brute force, implementation, strings	800	x35970
1703B	ICPC Balloons data structures, implementation	800	x50221
1703A	YES or YES? brute force, implementation, strings	800	x71384
1702G2	Passable Paths (hard version) data structures, dfs and similar, trees	2000	x4721
1702G1	Passable Paths (easy version) dfs and similar, trees	1900	x5499
1702F	Equate Multisets constructive algorithms, data structures, greedy, math, number theory	1700	x8465
1702E	Split Into Two Sets dfs and similar, dsu, graphs	1600	x13525
1702D	Not a Cheap String greedy	1000	x23845
1702C	Train and Queries data structures, greedy	1100	x22616
1702B	Polycarp Writes a String from Memory greedy	800	x27780
1702A	Round Down the Price constructive algorithms	800	x35075
1701F	Points combinatorics, data structures, implementation, math, matrices	2500	x952
1701E	Text Editor brute force, dp, greedy, strings	2500	x1150
1701D	Permutation Restoration binary search, data structures, greedy, math, sortings, two pointers	1900	x5726
1701C	Schedule Management binary search, greedy, implementation, two pointers	1400	x17339
1701B	Permutation greedy	800	x20239
1701A	Grass Field implementation	800	x26428
1700F	Puzzle constructive algorithms, dp, greedy	2600	x942
1700E	Serega the Pirate brute force, constructive algorithms	2600	x876
1700D	River Locks binary search, dp, greedy, math	1900	x6158
1700C	Helping the Nature constructive algorithms, data structures, greedy	1700	x10997
1700B	Palindromic Numbers constructive algorithms, implementation, math	1100	x18844
1700A	Optimal Path constructive algorithms, greedy, math	800	x22947
1699E	Three Days Grace data structures, dp, greedy, math, number theory, two pointers	2600	x1190
1699D	Almost Triple Deletions data structures, dp, greedy	2300	x3167
1699C	The Third Problem combinatorics, constructive algorithms, math	1700	x9830
1699B	Almost Ternary Matrix bitmasks, constructive algorithms, matrices	900	x19889
1699A	The Third Three Number Problem constructive algorithms, math	800	x24075
1698G	Long Binary String bitmasks, math, matrices, meet-in-the-middle, number theory	2900	x318
1698F	Equal Reversal constructive algorithms, graphs, implementation, math	2800	x643
1698E	PermutationForces II brute force, combinatorics, greedy, sortings, trees, two pointers	2300	x1658