Problemset - Codeforces

Problems

#	Name
1711B	Party brute force, graphs	1300	x13465
1711A	Perfect Permutation constructive algorithms	800	x25266
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	x1394
1710B	Rain binary search, brute force, data structures, geometry, greedy, implementation, math	2100	x2498
1710A	Color the Picture constructive algorithms, greedy, math	1500	x10976
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	x2789
1709D	Rorororobot binary search, data structures, greedy, math	1700	x8495
1709C	Recover an RBS constructive algorithms, greedy, implementation, strings	1800	x8919
1709B	Also Try Minecraft data structures, dp, implementation	900	x22961
1709A	Three Doors brute force, greedy, implementation, math	800	x29746
1708B	Difference of GCDs constructive algorithms, math	1100	x21041
1708A	Difference Operations greedy, math	800	x21836
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	x660
1707C	DFS Trees dfs and similar, dsu, graphs, greedy, sortings, trees	2400	x1563
1707B	Difference Array brute force, data structures, implementation, sortings	1900	x5802
1707A	Doremy's IQ binary search, constructive algorithms, greedy, implementation	1600	x13737
1706E	Qpwoeirut and Vertices binary search, data structures, dfs and similar, divide and conquer, dsu, greedy, trees	2300	x2777
1706D2	Chopping Carrots (Hard Version) brute force, constructive algorithms, data structures, dp, greedy, math, number theory, two pointers	2400	x1724
1706D1	Chopping Carrots (Easy Version) binary search, brute force, constructive algorithms, greedy, number theory	1700	x7038
1706C	Qpwoeirut And The City dp, flows, greedy, implementation	1400	x15001
1706B	Making Towers dp, greedy, math	1100	x16630
1706A	Another String Minimization Problem 2-sat, constructive algorithms, greedy, string suffix structures, strings	800	x23056
1705F	Mark and the Online Exam bitmasks, constructive algorithms, interactive, probabilities	2900	x618
1705E	Mark and Professor Koro binary search, bitmasks, brute force, combinatorics, data structures, greedy	2300	x2108
1705D	Mark and Lightbulbs combinatorics, constructive algorithms, greedy, math, sortings	1800	x6382
1705C	Mark and His Unfinished Essay brute force, implementation	1400	x13416
1705B	Mark the Dust Sweeper constructive algorithms, greedy, implementation	900	x23136
1705A	Mark the Photographer greedy, sortings	800	x25349
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	x115
1704F	Colouring Game constructive algorithms, dp, games	2600	x1062
1704E	Count Seconds brute force, constructive algorithms, dp, graphs, implementation, math	2200	x2382
1704D	Magical Array constructive algorithms, hashing, implementation, math	1900	x5066
1704C	Virus greedy, implementation, sortings	1200	x16186
1704B	Luke is a Foodie brute force, greedy, implementation	1000	x18529
1704A	Two 0-1 Sequences constructive algorithms, greedy	800	x16061
1703G	Good Key, Bad Key bitmasks, brute force, dp, greedy, math	1600	x10843
1703F	Yet Another Problem About Pairs Satisfying an Inequality binary search, data structures, dp, greedy, sortings	1300	x20481
1703E	Mirror Grid implementation	1200	x18748
1703D	Double Strings brute force, data structures, strings	1100	x25939
1703C	Cypher brute force, implementation, strings	800	x36002
1703B	ICPC Balloons data structures, implementation	800	x50292
1703A	YES or YES? brute force, implementation, strings	800	x71612
1702G2	Passable Paths (hard version) data structures, dfs and similar, trees	2000	x4728
1702G1	Passable Paths (easy version) dfs and similar, trees	1900	x5509
1702F	Equate Multisets constructive algorithms, data structures, greedy, math, number theory	1700	x8470
1702E	Split Into Two Sets dfs and similar, dsu, graphs	1600	x13538
1702D	Not a Cheap String greedy	1000	x23862
1702C	Train and Queries data structures, greedy	1100	x22635
1702B	Polycarp Writes a String from Memory greedy	800	x27787
1702A	Round Down the Price constructive algorithms	800	x35095
1701F	Points combinatorics, data structures, implementation, math, matrices	2500	x953
1701E	Text Editor brute force, dp, greedy, strings	2500	x1152
1701D	Permutation Restoration binary search, data structures, greedy, math, sortings, two pointers	1900	x5728
1701C	Schedule Management binary search, greedy, implementation, two pointers	1400	x17360
1701B	Permutation greedy	800	x20243
1701A	Grass Field implementation	800	x26442
1700F	Puzzle constructive algorithms, dp, greedy	2600	x943
1700E	Serega the Pirate brute force, constructive algorithms	2600	x876
1700D	River Locks binary search, dp, greedy, math	1900	x6161
1700C	Helping the Nature constructive algorithms, data structures, greedy	1700	x11011
1700B	Palindromic Numbers constructive algorithms, implementation, math	1100	x18849
1700A	Optimal Path constructive algorithms, greedy, math	800	x22952
1699E	Three Days Grace data structures, dp, greedy, math, number theory, two pointers	2600	x1210
1699D	Almost Triple Deletions data structures, dp, greedy	2300	x3170
1699C	The Third Problem combinatorics, constructive algorithms, math	1700	x9838
1699B	Almost Ternary Matrix bitmasks, constructive algorithms, matrices	900	x19895
1699A	The Third Three Number Problem constructive algorithms, math	800	x24083
1698G	Long Binary String bitmasks, math, matrices, meet-in-the-middle, number theory	2900	x318
1698F	Equal Reversal constructive algorithms, graphs, implementation, math	2800	x644
1698E	PermutationForces II brute force, combinatorics, greedy, sortings, trees, two pointers	2300	x1658
1698D	Fixed Point Guessing binary search, constructive algorithms, interactive	1600	x9454
1698C	3SUM Closure brute force, data structures	1300	x18619
1698B	Rising Sand constructive algorithms, greedy, implementation	800	x20989
1698A	XOR Mixup bitmasks, brute force	800	x29422
1697F	Too Many Constraints 2-sat, constructive algorithms, graphs, implementation	2800	x571
1697E	Coloring brute force, combinatorics, constructive algorithms, dp, geometry, graphs, greedy, implementation, math	2400	x1242
1697D	Guess The String binary search, constructive algorithms, interactive	1900	x4494
1697C	awoo's Favorite Problem binary search, constructive algorithms, data structures, greedy, implementation, strings, two pointers	1400	x14471
1697B	Promo greedy, sortings	900	x26969
1697A	Parkway Walk greedy, implementation	800	x25809
1696H	Maximum Product? brute force, combinatorics, dp, greedy, implementation, math, two pointers	3500	x164
1696G	Fishingprince Plays With Array Again brute force, data structures, geometry, math	3300	x278
1696F	Tree Recovery brute force, constructive algorithms, dfs and similar, dsu, graphs, trees	2600	x889
1696E	Placing Jinas combinatorics, math	2000	x4110
1696D	Permutation Graph binary search, constructive algorithms, data structures, divide and conquer, greedy, shortest paths	1900	x5498
1696C	Fishingprince Plays With Array constructive algorithms, greedy, implementation, math	1400	x11701
1696B	NIT Destroys the Universe greedy	900	x21906
1696A	NIT orz! bitmasks, greedy	800	x18882
1695E	Ambiguous Dominoes constructive algorithms, dfs and similar, graphs	2700	x453
1695D2	Tree Queries (Hard Version) constructive algorithms, dfs and similar, dp, greedy, trees	2300	x2028
1695D1	Tree Queries (Easy Version) brute force, constructive algorithms, dfs and similar, dp, greedy, trees	2200	x2199
1695C	Zero Path brute force, data structures, dp, graphs, greedy, shortest paths	1700	x11034
1695B	Circle Game games, greedy	1000	x18592