Problemset - Codeforces

Problems

#	Name
1714A	Everyone Loves to Sleep implementation, math	900	x29969
1713F	Lost Array bitmasks, combinatorics, constructive algorithms, dp, math	2900	x546
1713E	Cross Swapping 2-sat, data structures, dsu, greedy, matrices	2400	x1734
1713D	Tournament Countdown constructive algorithms, greedy, interactive, number theory, probabilities	1800	x5728
1713C	Build Permutation constructive algorithms, dp, math	1200	x17503
1713B	Optimal Reduction constructive algorithms, sortings	1000	x21436
1713A	Traveling Salesman Problem geometry, greedy, implementation	800	x22050
1712F	Triameter binary search, data structures, dfs and similar, trees	3200	x337
1712E2	LCM Sum (hard version) brute force, data structures, math, number theory, two pointers	2500	x1374
1712E1	LCM Sum (easy version) binary search, brute force, combinatorics, math, number theory, two pointers	2300	x2206
1712D	Empty Graph binary search, constructive algorithms, data structures, greedy, shortest paths	2000	x4579
1712C	Sort Zero greedy, sortings	1100	x19967
1712B	Woeful Permutation constructive algorithms, greedy, number theory	800	x21680
1712A	Wonderful Permutation greedy, implementation	800	x24170
1711B	Party brute force, graphs	1300	x13474
1711A	Perfect Permutation constructive algorithms	800	x25284
1710E	Two Arrays binary search, games, graph matchings	2400	x507
1710D	Recover the Tree constructive algorithms, trees	3400	x423
1710C	XOR Triangle bitmasks, brute force, constructive algorithms, dp, greedy, math	2500	x1395
1710B	Rain binary search, brute force, data structures, geometry, greedy, implementation, math	2100	x2501
1710A	Color the Picture constructive algorithms, greedy, math	1500	x10987
1709F	Multiset of Strings bitmasks, brute force, dp, fft, flows, graphs, math, meet-in-the-middle, trees	2500	x559
1709E	XOR Tree bitmasks, data structures, dfs and similar, dsu, greedy, trees	2400	x2803
1709D	Rorororobot binary search, data structures, greedy, math	1700	x8507
1709C	Recover an RBS constructive algorithms, greedy, implementation, strings	1800	x8926
1709B	Also Try Minecraft data structures, dp, implementation	900	x22998
1709A	Three Doors brute force, greedy, implementation, math	800	x29761
1708B	Difference of GCDs constructive algorithms, math	1100	x21073
1708A	Difference Operations greedy, math	800	x21845
1707F	Bugaboo bitmasks, constructive algorithms, dp, number theory	3500	x154
1707E	Replace binary search, data structures	3500	x731
1707D	Partial Virtual Trees combinatorics, dfs and similar, dp, math, trees	3000	x662
1707C	DFS Trees dfs and similar, dsu, graphs, greedy, sortings, trees	2400	x1567
1707B	Difference Array brute force, data structures, implementation, sortings	1900	x5812
1707A	Doremy's IQ binary search, constructive algorithms, greedy, implementation	1600	x13759
1706E	Qpwoeirut and Vertices binary search, data structures, dfs and similar, divide and conquer, dsu, greedy, trees	2300	x2786
1706D2	Chopping Carrots (Hard Version) brute force, constructive algorithms, data structures, dp, greedy, math, number theory, two pointers	2400	x1727
1706D1	Chopping Carrots (Easy Version) binary search, brute force, constructive algorithms, greedy, number theory	1700	x7044
1706C	Qpwoeirut And The City dp, flows, greedy, implementation	1400	x15015
1706B	Making Towers dp, greedy, math	1100	x16635
1706A	Another String Minimization Problem 2-sat, constructive algorithms, greedy, string suffix structures, strings	800	x23070
1705F	Mark and the Online Exam bitmasks, constructive algorithms, interactive, probabilities	2900	x620
1705E	Mark and Professor Koro binary search, bitmasks, brute force, combinatorics, data structures, greedy	2300	x2111
1705D	Mark and Lightbulbs combinatorics, constructive algorithms, greedy, math, sortings	1800	x6386
1705C	Mark and His Unfinished Essay brute force, implementation	1400	x13423
1705B	Mark the Dust Sweeper constructive algorithms, greedy, implementation	900	x23152
1705A	Mark the Photographer greedy, sortings	800	x25365
1704H2	Game of AI (hard version) combinatorics, fft, math	3500	x93
1704H1	Game of AI (easy version) combinatorics, constructive algorithms, dp, fft, math	3200	x187
1704G	Mio and Lucky Array constructive algorithms, fft, math, strings	3500	x115
1704F	Colouring Game constructive algorithms, dp, games	2600	x1068
1704E	Count Seconds brute force, constructive algorithms, dp, graphs, implementation, math	2200	x2387
1704D	Magical Array constructive algorithms, hashing, implementation, math	1900	x5073
1704C	Virus greedy, implementation, sortings	1200	x16216
1704B	Luke is a Foodie brute force, greedy, implementation	1000	x18586
1704A	Two 0-1 Sequences constructive algorithms, greedy	800	x16070
1703G	Good Key, Bad Key bitmasks, brute force, dp, greedy, math	1600	x10876
1703F	Yet Another Problem About Pairs Satisfying an Inequality binary search, data structures, dp, greedy, sortings	1300	x20532
1703E	Mirror Grid implementation	1200	x18791
1703D	Double Strings brute force, data structures, strings	1100	x25976
1703C	Cypher brute force, implementation, strings	800	x36038
1703B	ICPC Balloons data structures, implementation	800	x50534
1703A	YES or YES? brute force, implementation, strings	800	x71896
1702G2	Passable Paths (hard version) data structures, dfs and similar, trees	2000	x4739
1702G1	Passable Paths (easy version) dfs and similar, trees	1900	x5516
1702F	Equate Multisets constructive algorithms, data structures, greedy, math, number theory	1700	x8475
1702E	Split Into Two Sets dfs and similar, dsu, graphs	1600	x13567
1702D	Not a Cheap String greedy	1000	x23878
1702C	Train and Queries data structures, greedy	1100	x22662
1702B	Polycarp Writes a String from Memory greedy	800	x27793
1702A	Round Down the Price constructive algorithms	800	x35123
1701F	Points combinatorics, data structures, implementation, math, matrices	2500	x953
1701E	Text Editor brute force, dp, greedy, strings	2500	x1157
1701D	Permutation Restoration binary search, data structures, greedy, math, sortings, two pointers	1900	x5732
1701C	Schedule Management binary search, greedy, implementation, two pointers	1400	x17383
1701B	Permutation greedy	800	x20257
1701A	Grass Field implementation	800	x26463
1700F	Puzzle constructive algorithms, dp, greedy	2600	x948
1700E	Serega the Pirate brute force, constructive algorithms	2600	x879
1700D	River Locks binary search, dp, greedy, math	1900	x6168
1700C	Helping the Nature constructive algorithms, data structures, greedy	1700	x11025
1700B	Palindromic Numbers constructive algorithms, implementation, math	1100	x18867
1700A	Optimal Path constructive algorithms, greedy, math	800	x22975
1699E	Three Days Grace data structures, dp, greedy, math, number theory, two pointers	2600	x1215
1699D	Almost Triple Deletions data structures, dp, greedy	2300	x3174
1699C	The Third Problem combinatorics, constructive algorithms, math	1700	x9849
1699B	Almost Ternary Matrix bitmasks, constructive algorithms, matrices	900	x19926
1699A	The Third Three Number Problem constructive algorithms, math	800	x24107
1698G	Long Binary String bitmasks, math, matrices, meet-in-the-middle, number theory	2900	x319
1698F	Equal Reversal constructive algorithms, graphs, implementation, math	2800	x645
1698E	PermutationForces II brute force, combinatorics, greedy, sortings, trees, two pointers	2300	x1659
1698D	Fixed Point Guessing binary search, constructive algorithms, interactive	1600	x9477
1698C	3SUM Closure brute force, data structures	1300	x18634
1698B	Rising Sand constructive algorithms, greedy, implementation	800	x20996
1698A	XOR Mixup bitmasks, brute force	800	x29471
1697F	Too Many Constraints 2-sat, constructive algorithms, graphs, implementation	2800	x573
1697E	Coloring brute force, combinatorics, constructive algorithms, dp, geometry, graphs, greedy, implementation, math	2400	x1243
1697D	Guess The String binary search, constructive algorithms, interactive	1900	x4498
1697C	awoo's Favorite Problem binary search, constructive algorithms, data structures, greedy, implementation, strings, two pointers	1400	x14501
1697B	Promo greedy, sortings	900	x27021