Problemset - Codeforces

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Codeforces Round (Div. 2)
7 days

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Problems

#	Name
1774C	Ice and Fire constructive algorithms, dp, greedy	1300	x12011
1774B	Coloring constructive algorithms, greedy, math	1500	x12263
1773K	King's Puzzle constructive algorithms	1900	x1414
1773E	Easy Assembly greedy, sortings	1400	x4875
1773A	Amazing Trick constructive algorithms, graph matchings, math, probabilities	1900	x1537
1772E	Permutation Game games	1700	x6767
1772D	Absolute Sorting constructive algorithms, math	1400	x15901
1771C	Hossam and Trainees greedy, math, number theory	1600	x9691
1771B	Hossam and Friends binary search, constructive algorithms, dp, two pointers	1400	x14386
1770C	Koxia and Number Theory brute force, chinese remainder theorem, math, number theory	1700	x8534
1769D1	Игра в Девятку I *special problem, brute force, dp	1800	x383
1769C2	Подкрутка II *special problem, dp	1300	x966
1769B2	Копирование файлов II *special problem, binary search, brute force, math	1400	x877
1768D	Lucky Permutation constructive algorithms, dfs and similar, graphs, greedy	1800	x7152
1768C	Elemental Decompress constructive algorithms, greedy, implementation, sortings	1300	x14189
1767D	Playoff combinatorics, constructive algorithms, dp, greedy, math	1500	x9886
1766D	Lucky Chains math, number theory	1600	x8905
1766C	Hamiltonian Wall dp, implementation	1300	x13654
1765N	Number Reduction greedy	1500	x4772
1765K	Torus Path greedy, math	1500	x5796
1765D	Watch the Videos binary search, constructive algorithms, two pointers	1700	x4156
1764C	Doremy's City Construction graphs, greedy	1400	x9401
1762C	Binary Strings are Fun combinatorics, math	1400	x9172
1761C	Set Construction constructive algorithms, dfs and similar, graphs, greedy	1400	x9584
1760G	SlavicG's Favorite Problem bitmasks, dfs and similar, graphs	1700	x7350
1760F	Quests binary search, greedy, sortings	1500	x12219
1759G	Restore the Permutation binary search, constructive algorithms, data structures, greedy, math	1900	x4479
1759F	All Possible Digits binary search, data structures, greedy, math, number theory	1800	x3916
1759E	The Humanoid brute force, dp, sortings	1500	x10807
1759D	Make It Round brute force, number theory	1400	x13602
1758D	Range = √Sum binary search, brute force, constructive algorithms, math, two pointers	1800	x7306
1758C	Almost All Multiples greedy, number theory	1400	x13627
1753B	Factorial Divisibility math, number theory	1600	x12766
1753A2	Make Nonzero Sum (hard version) constructive algorithms, dp, greedy	1500	x10325
1753A1	Make Nonzero Sum (easy version) constructive algorithms, dp, greedy	1300	x14913
1750D	Count GCD combinatorics, math, number theory	1800	x5875
1750C	Complementary XOR constructive algorithms, implementation	1400	x9551
1749D	Counting Arrays combinatorics, dp, math, number theory	1900	x5580
1749C	Number Game binary search, data structures, games, greedy, implementation	1400	x13929
1748C	Zero-Sum Prefixes brute force, data structures, dp, greedy, implementation	1600	x11100
1748B	Diverse Substrings brute force, implementation, strings	1400	x15025
1747D	Yet Another Problem binary search, bitmasks, constructive algorithms, data structures	1900	x4661
1746D	Paths on the Tree dfs and similar, dp, greedy, sortings, trees	1900	x4614
1746C	Permutation Operations constructive algorithms, greedy, implementation, math	1300	x12800
1744E2	Divisible Numbers (hard version) brute force, math, number theory	1900	x5594
1744E1	Divisible Numbers (easy version) brute force, math, number theory	1500	x10869
1743D	Problem with Random Tests brute force, dp, greedy, probabilities	1700	x7594
1742G	Orray bitmasks, brute force, greedy, math, sortings	1500	x10741
1742F	Smaller constructive algorithms, greedy, strings	1500	x11667
1741E	Sending a Sequence Over the Network dp	1600	x12253
1741D	Masha and a Beautiful Tree dfs and similar, divide and conquer, graphs, sortings, trees	1300	x15215
1740E	Hanging Hearts constructive algorithms, data structures, dfs and similar, dp, greedy, trees	1800	x4338
1740D	Knowledge Cards constructive algorithms, data structures	1500	x8068
1740C	Bricks and Bags constructive algorithms, games, greedy, sortings	1400	x11021
1739D	Reset K Edges binary search, data structures, dfs and similar, graphs, greedy, trees	1900	x5163
1739C	Card Game combinatorics, constructive algorithms, dp, games	1500	x9079
1738D	Permutation Addicts constructive algorithms, data structures, dfs and similar, dsu, graphs, trees	1900	x3436
1738C	Even Number Addicts dp, games, greedy, math	1500	x11161
1737C	Ela and Crickets constructive algorithms, games, implementation, math	1500	x5752
1737B	Ela's Fitness and the Luxury Number binary search, implementation, math	1300	x9391
1736C1	Good Subarrays (Easy Version) binary search, data structures, schedules, two pointers	1300	x15030
1735D	Meta-set brute force, combinatorics, data structures, hashing, math	1700	x5506
1735C	Phase Shift dfs and similar, dsu, graphs, greedy, implementation, strings	1400	x9910
1734D	Slime Escape data structures, dp, greedy, two pointers	1800	x6301
1733D1	Zero-One (Easy Version) constructive algorithms, greedy, math	1400	x13466
1733C	Parity Shuffle Sorting constructive algorithms, sortings	1300	x15618
1732D1	Balance (Easy version) brute force, data structures, implementation, number theory	1500	x8658
1732C1	Sheikh (Easy version) binary search, bitmasks, greedy, two pointers	1800	x5902
1731D	Valiant's New Map binary search, brute force, data structures, dp, two pointers	1700	x7163
1731C	Even Subarrays bitmasks, brute force, hashing, math, number theory	1700	x9540
1730B	Meeting on the Line binary search, geometry, greedy, implementation, math, ternary search	1600	x12664
1729F	Kirei and the Linear Function hashing, math	1900	x4152
1729E	Guess the Cycle Size interactive, probabilities	1800	x7003
1728D	Letter Picking constructive algorithms, dp, games, two pointers	1800	x7237
1728C	Digital Logarithm data structures, greedy, sortings	1400	x15894
1726C	Jatayu's Balanced Bracket Sequence data structures, dsu, graphs, greedy	1300	x12343
1725M	Moving Both Hands dp, graphs, shortest paths	1800	x3127
1725H	Hot Black Hot White constructive algorithms, math	1800	x2613
1725G	Garage binary search, geometry, math	1500	x5878
1722G	Even-Odd XOR bitmasks, constructive algorithms, greedy	1500	x11310
1722F	L-shapes dfs and similar, implementation	1700	x6940
1722E	Counting Rectangles brute force, data structures, dp, implementation	1600	x10830
1721D	Maximum AND bitmasks, dfs and similar, divide and conquer, greedy, sortings	1800	x6624
1721C	Min-Max Array Transformation binary search, greedy, two pointers	1400	x13375
1720D1	Xor-Subsequence (easy version) bitmasks, brute force, dp, strings, trees, two pointers	1800	x5995
1719C	Fighting Tournament binary search, data structures, implementation, two pointers	1400	x13239
1718A2	Burenka and Traditions (hard version) data structures, dp, greedy	1900	x5231
1718A1	Burenka and Traditions (easy version) dp, greedy	1800	x5762
1717D	Madoka and The Corruption Scheme combinatorics, constructive algorithms, greedy, math	1900	x4407
1717C	Madoka and Formal Statement greedy	1300	x14658
1715D	2+ doors 2-sat, bitmasks, graphs, greedy	1900	x5143
1715C	Monoblock combinatorics, data structures, implementation, math	1700	x8634
1714G	Path Prefixes binary search, data structures, dfs and similar, trees	1700	x7595
1714F	Build a Tree and That Is It constructive algorithms, implementation, trees	1900	x3228
1714E	Add Modulo 10 brute force, math, number theory	1400	x16570
1714D	Color with Occurrences brute force, data structures, dp, greedy, strings	1600	x9079
1713D	Tournament Countdown constructive algorithms, greedy, interactive, number theory, probabilities	1800	x5680
1711B	Party brute force, graphs	1300	x13404
1710A	Color the Picture constructive algorithms, greedy, math	1500	x10897
1709D	Rorororobot binary search, data structures, greedy, math	1700	x8407