Problemset - Codeforces

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Codeforces Round (Div. 4)
43:39:57
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Problems

#	Name
1826D	Running Miles brute force, dp, greedy	1700	x9524
1826C	Dreaming of Freedom greedy, math, number theory	1300	x13409
1824B1	LuoTianyi and the Floating Islands (Easy Version) combinatorics, math, probabilities, trees	1800	x4513
1824A	LuoTianyi and the Show greedy, implementation	1400	x11166
1823D	Unique Palindromes constructive algorithms, math, strings	1900	x3790
1823C	Strongly Composite greedy, math, number theory	1300	x12155
1822G1	Magic Triples (Easy Version) brute force, data structures, math, number theory	1700	x6942
1822F	Gardening Friends brute force, dfs and similar, dp, graphs, trees	1700	x6047
1822E	Making Anti-Palindromes greedy, math, strings	1600	x10318
1821D	Black Cells binary search, brute force, greedy, math	1900	x4930
1821C	Tear It Apart brute force, implementation, math, strings	1300	x14151
1819B	The Butcher geometry, greedy, implementation, sortings, two pointers	1900	x3533
1819A	Constructive Problem brute force, greedy	1300	x12569
1817B	Fish Graph brute force, constructive algorithms, dfs and similar, graphs	1900	x4070
1817A	Almost Increasing Subsequence binary search, data structures, greedy	1500	x10891
1815A	Ian and Array Sorting greedy, math	1300	x13980
1814C	Search in Parallel constructive algorithms, greedy, sortings	1500	x10683
1814B	Long Legs brute force, math	1700	x9917
1811E	Living Sequence binary search, dp, math, number theory	1500	x12154
1811D	Umka and a Long Flight constructive algorithms, implementation, math	1600	x7400
1810D	Climbing the Tree binary search, math	1700	x7372
1810C	Make It Permutation brute force, greedy, sortings	1300	x14396
1809D	Binary String Sorting constructive algorithms, greedy	1800	x6219
1809C	Sum on Subarrays constructive algorithms, greedy, math	1500	x12605
1808C	Unlucky Numbers brute force, dp, greedy, implementation	1900	x3745
1807F	Bouncy Ball brute force, dfs and similar, implementation	1700	x6177
1807E	Interview binary search, implementation, interactive	1300	x12724
1806C	Sequence Master brute force, constructive algorithms, math	1600	x7513
1805D	A Wide, Wide Graph dfs and similar, dp, graphs, greedy, trees	1800	x6435
1805C	Place for a Selfie binary search, data structures, geometry, math	1400	x12414
1804C	Pull Your Luck brute force, greedy, math, number theory	1500	x11986
1801C	Music Festival binary search, data structures, dp, greedy, sortings	1900	x3383
1801B	Buying gifts data structures, greedy, sortings	1800	x6151
1801A	The Very Beautiful Blanket bitmasks, constructive algorithms	1600	x8470
1800F	Dasha and Nightmares bitmasks, hashing, meet-in-the-middle, strings	1900	x3846
1800E2	Unforgivable Curse (hard version) brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, strings	1500	x12644
1800E1	Unforgivable Curse (easy version) brute force, constructive algorithms, dsu, graphs, greedy, strings	1400	x12681
1799D1	Hot Start Up (easy version) dp	1900	x4407
1799C	Double Lexicographically Minimum greedy, strings	1700	x5756
1798D	Shocking Arrangement constructive algorithms, greedy, math	1600	x9678
1798C	Candy Store greedy, math, number theory	1700	x8089
1797D	Li Hua and Tree brute force, data structures, dfs and similar, dp, implementation, trees	1900	x3903
1797C	Li Hua and Chess constructive algorithms, greedy, interactive	1600	x7542
1796C	Maximum Set binary search, math	1600	x10269
1795D	Triangle Coloring combinatorics, math	1600	x8997
1795C	Tea Tasting binary search, data structures, implementation	1500	x12218
1794D	Counting Factorizations combinatorics, divide and conquer, dp, math, number theory	1900	x3527
1794C	Scoring Subsequences binary search, greedy, math, two pointers	1300	x13522
1793D	Moscow Gorillas binary search, dp, greedy, implementation, math, two pointers	1800	x6040
1792D	Fixed Prefix Permutations binary search, bitmasks, data structures, hashing, math, sortings	1700	x6199
1792C	Min Max Sort binary search, brute force, greedy, math, two pointers	1500	x13947
1791G2	Teleporters (Hard Version) binary search, greedy, sortings	1900	x4725
1791F	Range Update Point Query binary search, brute force, data structures	1500	x12251
1790E	Vlad and a Pair of Numbers bitmasks, constructive algorithms	1400	x14947
1789C	Serval and Toxel's Arrays combinatorics, dp, implementation, math	1500	x8450
1788C	Matching Numbers constructive algorithms, greedy, math	1300	x17065
1787D	Game on Axis combinatorics, dfs and similar, dsu, graphs, implementation	1900	x3373
1787C	Remove the Bracket dp, greedy, math	1600	x7004
1786B	Cake Assembly Line brute force, sortings	1300	x8905
1784B	Letter Exchange constructive algorithms	1900	x3297
1783C	Yet Another Tournament binary search, greedy, sortings	1700	x9224
1781D	Many Perfect Squares brute force, math, number theory	1800	x5450
1781C	Equal Frequencies brute force, constructive algorithms, greedy, implementation, sortings, strings	1600	x7501
1780D	Bit Guessing Game binary search, bitmasks, constructive algorithms, interactive	1800	x4864
1779D	Boris and His Amazing Haircut constructive algorithms, data structures, dp, dsu, greedy, sortings	1700	x7824
1779C	Least Prefix Sum data structures, greedy	1600	x12287
1778C	Flexible String bitmasks, brute force, strings	1600	x8102
1778B	The Forbidden Permutation greedy, math	1300	x13222
1777D	Score of a Tree bitmasks, combinatorics, dfs and similar, dp, math, probabilities, trees	1900	x3430
1777C	Quiz Master binary search, math, number theory, sortings, two pointers	1700	x8404
1776L	Controllers binary search, math	1500	x5840
1776H	Beppa and SwerChat two pointers	1300	x6300
1776F	Train Splitting constructive algorithms, graphs, greedy	1700	x3392
1775D	Friendly Spiders dfs and similar, graphs, math, number theory, shortest paths	1800	x6153
1775C	Interesting Sequence bitmasks, math	1600	x10292
1775B	Gardener and the Array bitmasks, constructive algorithms	1300	x13634
1774E	Two Chess Pieces dfs and similar, dp, greedy, trees	1900	x3448
1774D	Same Count One brute force, constructive algorithms, greedy, implementation, two pointers	1600	x7760
1774C	Ice and Fire constructive algorithms, dp, greedy	1300	x11925
1774B	Coloring constructive algorithms, greedy, math	1500	x12123
1773K	King's Puzzle constructive algorithms	1900	x1404
1773E	Easy Assembly greedy, sortings	1400	x4819
1773A	Amazing Trick constructive algorithms, graph matchings, math, probabilities	1900	x1524
1772E	Permutation Game games	1700	x6706
1772D	Absolute Sorting constructive algorithms, math	1400	x15743
1771C	Hossam and Trainees greedy, math, number theory	1600	x9542
1771B	Hossam and Friends binary search, constructive algorithms, dp, two pointers	1400	x14082
1770C	Koxia and Number Theory brute force, chinese remainder theorem, math, number theory	1700	x8488
1769D1	Игра в Девятку I *special problem, brute force, dp	1800	x375
1769C2	Подкрутка II *special problem, dp	1300	x953
1769B2	Копирование файлов II *special problem, binary search, brute force, math	1400	x868
1768D	Lucky Permutation constructive algorithms, dfs and similar, graphs, greedy	1800	x7048
1768C	Elemental Decompress constructive algorithms, greedy, implementation, sortings	1300	x14076
1767D	Playoff combinatorics, constructive algorithms, dp, greedy, math	1500	x9795
1766D	Lucky Chains math, number theory	1600	x8811
1766C	Hamiltonian Wall dp, implementation	1300	x13494
1765N	Number Reduction greedy	1500	x4691
1765K	Torus Path greedy, math	1500	x5735
1765D	Watch the Videos binary search, constructive algorithms, two pointers	1700	x4102
1764C	Doremy's City Construction graphs, greedy	1400	x9336