Problemset - Codeforces

Problems

#	Name
1720B	Interesting Sum brute force, data structures, greedy, math, sortings	800	x21288
1720A	Burenka Plays with Fractions math, number theory	900	x22521
1719C	Fighting Tournament binary search, data structures, implementation, two pointers	1400	x13342
1719B	Mathematical Circus constructive algorithms, math	800	x18593
1719A	Chip Game games, math	800	x25673
1718F	Burenka, an Array and Queries data structures, math, number theory	3300	x163
1718E	Impressionism constructive algorithms, graphs, implementation, math	3500	x120
1718D	Permutation for Burenka data structures, graph matchings, greedy, math, trees	3300	x314
1718C	Tonya and Burenka-179 data structures, greedy, math, number theory	2400	x1638
1718B	Fibonacci Strings greedy, implementation, math, number theory	2000	x3046
1718A2	Burenka and Traditions (hard version) data structures, dp, greedy	1900	x5324
1718A1	Burenka and Traditions (easy version) dp, greedy	1800	x5844
1717F	Madoka and The First Session constructive algorithms, flows, graph matchings, graphs, implementation	2500	x532
1717E	Madoka and The Best University math, number theory	2200	x2763
1717D	Madoka and The Corruption Scheme combinatorics, constructive algorithms, greedy, math	1900	x4436
1717C	Madoka and Formal Statement greedy	1300	x14743
1717B	Madoka and Underground Competitions constructive algorithms, implementation	1100	x14881
1717A	Madoka and Strange Thoughts math, number theory	800	x19581
1716F	Bags with Balls combinatorics, dp, math, number theory	2500	x1081
1716E	Swap and Maximum Block bitmasks, data structures, dfs and similar, divide and conquer, dp	2500	x1105
1716D	Chip Move brute force, dp, math	2000	x5326
1716C	Robot in a Hallway data structures, dp, greedy, implementation, ternary search	2000	x4237
1716B	Permutation Chain constructive algorithms, math	800	x21464
1716A	2-3 Moves greedy, math	800	x33180
1715F	Crop Squares constructive algorithms, geometry, interactive, math	2700	x530
1715E	Long Way Home data structures, divide and conquer, dp, geometry, graphs, greedy, shortest paths	2400	x1752
1715D	2+ doors 2-sat, bitmasks, graphs, greedy	1900	x5202
1715C	Monoblock combinatorics, data structures, implementation, math	1700	x8709
1715B	Beautiful Array constructive algorithms, greedy, math	1000	x22325
1715A	Crossmarket constructive algorithms, greedy, math	800	x23604
1714G	Path Prefixes binary search, data structures, dfs and similar, trees	1700	x7711
1714F	Build a Tree and That Is It constructive algorithms, implementation, trees	1900	x3281
1714E	Add Modulo 10 brute force, math, number theory	1400	x16913
1714D	Color with Occurrences brute force, data structures, dp, greedy, strings	1600	x9181
1714C	Minimum Varied Number greedy	800	x31204
1714B	Remove Prefix data structures, greedy, implementation	800	x30648
1714A	Everyone Loves to Sleep implementation, math	900	x29941
1713F	Lost Array bitmasks, combinatorics, constructive algorithms, dp, math	2900	x546
1713E	Cross Swapping 2-sat, data structures, dsu, greedy, matrices	2400	x1732
1713D	Tournament Countdown constructive algorithms, greedy, interactive, number theory, probabilities	1800	x5725
1713C	Build Permutation constructive algorithms, dp, math	1200	x17492
1713B	Optimal Reduction constructive algorithms, sortings	1000	x21420
1713A	Traveling Salesman Problem geometry, greedy, implementation	800	x22044
1712F	Triameter binary search, data structures, dfs and similar, trees	3200	x333
1712E2	LCM Sum (hard version) brute force, data structures, math, number theory, two pointers	2500	x1367
1712E1	LCM Sum (easy version) binary search, brute force, combinatorics, math, number theory, two pointers	2300	x2196
1712D	Empty Graph binary search, constructive algorithms, data structures, greedy, shortest paths	2000	x4574
1712C	Sort Zero greedy, sortings	1100	x19951
1712B	Woeful Permutation constructive algorithms, greedy, number theory	800	x21669
1712A	Wonderful Permutation greedy, implementation	800	x24161
1711B	Party brute force, graphs	1300	x13462
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	x10975
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	x22960
1709A	Three Doors brute force, greedy, implementation, math	800	x29746
1708B	Difference of GCDs constructive algorithms, math	1100	x21039
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	x16629
1706A	Another String Minimization Problem 2-sat, constructive algorithms, greedy, string suffix structures, strings	800	x23055
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	x23135
1705A	Mark the Photographer greedy, sortings	800	x25347
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	x20478
1703E	Mirror Grid implementation	1200	x18747
1703D	Double Strings brute force, data structures, strings	1100	x25938
1703C	Cypher brute force, implementation, strings	800	x36000
1703B	ICPC Balloons data structures, implementation	800	x50288
1703A	YES or YES? brute force, implementation, strings	800	x71599
1702G2	Passable Paths (hard version) data structures, dfs and similar, trees	2000	x4728