Problemset - Codeforces

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Codeforces Round 944 (Div. 4)
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Problems

#	Name
1842B	Tenzing and Books bitmasks, greedy, math	1100	x15655
1841E	Fill the Matrix data structures, greedy, math	2200	x1881
1841D	Pairs of Segments data structures, greedy, sortings, two pointers	2000	x4131
1841C	Ranom Numbers brute force, dp, greedy, math, strings	1800	x7308
1840D	Wooden Toy Festival binary search, greedy, sortings	1400	x12853
1839E	Decreasing Game constructive algorithms, dfs and similar, dp, greedy, interactive	2400	x1160
1839B	Lamps greedy, sortings	1100	x14484
1839A	The Good Array greedy, implementation, math	800	x17095
1838D	Bracket Walk data structures, greedy, strings	2100	x3080
1837F	Editorial for Two binary search, data structures, greedy, implementation	2400	x2069
1837D	Bracket Coloring constructive algorithms, greedy	1400	x13331
1837C	Best Binary String constructive algorithms, greedy	1000	x21098
1837B	Comparison String greedy	900	x26557
1836B	Astrophysicists greedy, math	1100	x12275
1835B	Lottery binary search, brute force, greedy, math, two pointers	2500	x903
1834D	Survey in Class brute force, data structures, greedy, implementation, sortings	1900	x4355
1834C	Game with Reversing games, greedy, math, strings	1200	x12641
1834B	Maximum Strength greedy, math	1000	x14532
1834A	Unit Array greedy, math	800	x21186
1833G	Ksyusha and Chinchilla constructive algorithms, dfs and similar, dp, dsu, greedy, implementation, trees	1800	x4944
1833D	Flipper brute force, constructive algorithms, greedy	1400	x12681
1833C	Vlad Building Beautiful Array greedy, math	800	x25518
1833B	Restore the Weather greedy, sortings	900	x25394
1832D2	Red-Blue Operations (Hard Version) binary search, constructive algorithms, greedy, implementation, math	2400	x1790
1832D1	Red-Blue Operations (Easy Version) binary search, greedy, implementation, math	2100	x2790
1832C	Contrast Value greedy, implementation	1200	x18253
1831B	Array merging constructive algorithms, greedy	1000	x18472
1830C	Hyperregular Bracket Strings combinatorics, greedy, hashing, math, number theory, sortings	2400	x1528
1829C	Mr. Perfectly Fine bitmasks, greedy, implementation	800	x27123
1827F	Copium Permutation constructive algorithms, data structures, greedy	3500	x107
1827E	Bus Routes binary search, constructive algorithms, dfs and similar, greedy, trees	3400	x362
1827D	Two Centroids data structures, dfs and similar, greedy, trees	2800	x704
1827B2	Range Sorting (Hard Version) binary search, data structures, dp, greedy	2400	x1770
1827B1	Range Sorting (Easy Version) binary search, dp, dsu, greedy, trees, two pointers	2000	x3663
1826D	Running Miles brute force, dp, greedy	1700	x8551
1826C	Dreaming of Freedom greedy, math, number theory	1300	x12785
1826A	Trust Nobody brute force, greedy, implementation, sortings	1200	x14500
1825B	LuoTianyi and the Table greedy, math	1000	x14165
1825A	LuoTianyi and the Palindrome String greedy, strings	800	x19267
1824C	LuoTianyi and XOR-Tree data structures, dfs and similar, dp, dsu, greedy, trees	2500	x1254
1824A	LuoTianyi and the Show greedy, implementation	1400	x10794
1823C	Strongly Composite greedy, math, number theory	1300	x11667
1822E	Making Anti-Palindromes greedy, math, strings	1600	x9702
1822B	Karina and Array greedy, math, sortings	800	x24077
1821E	Rearrange Brackets brute force, dp, greedy, sortings, strings	2100	x2245
1821D	Black Cells binary search, brute force, greedy, math	1900	x4756
1821B	Sort the Subarray brute force, greedy	1100	x16924
1819B	The Butcher geometry, greedy, implementation, sortings, two pointers	1900	x3431
1819A	Constructive Problem brute force, greedy	1300	x12065
1818A	Politics greedy, implementation	800	x12700
1817E	Half-sum brute force, divide and conquer, greedy	3400	x250
1817A	Almost Increasing Subsequence binary search, data structures, greedy	1500	x10313
1816B	Grid Reconstruction constructive algorithms, greedy	1000	x14698
1815C	Between constructive algorithms, dfs and similar, graphs, greedy	2200	x1852
1815A	Ian and Array Sorting greedy, math	1300	x13447
1814C	Search in Parallel constructive algorithms, greedy, sortings	1500	x10180
1811C	Restore the Array constructive algorithms, greedy	1100	x18892
1811A	Insert Digit greedy, math, strings	800	x30022
1810E	Monsters brute force, data structures, dfs and similar, dsu, graphs, greedy	2100	x2969
1810C	Make It Permutation brute force, greedy, sortings	1300	x13781
1810A	Beautiful Sequence brute force, greedy	800	x20346
1809F	Traveling in Berland binary search, data structures, graphs, greedy, implementation	2500	x705
1809D	Binary String Sorting constructive algorithms, greedy	1800	x5890
1809C	Sum on Subarrays constructive algorithms, greedy, math	1500	x11915
1809B	Points on Plane binary search, greedy, math	1000	x19038
1808C	Unlucky Numbers brute force, dp, greedy, implementation	1900	x3581
1807G2	Subsequence Addition (Hard Version) bitmasks, dp, greedy, implementation, sortings	1100	x17697
1807G1	Subsequence Addition (Easy Version) brute force, data structures, dp, greedy, implementation, sortings	1100	x17851
1807C	Find and Replace greedy, implementation, strings	800	x29186
1807B	Grab the Candies greedy	800	x39800
1806F2	GCD Master (hard version) greedy, math, sortings	2900	x267
1806F1	GCD Master (easy version) greedy, math, number theory, sortings	2900	x328
1806B	Mex Master constructive algorithms, greedy	900	x17028
1806A	Walking Master geometry, greedy, math	800	x22292
1805F2	Survival of the Weakest (hard version) greedy, math, sortings, two pointers	3100	x327
1805D	A Wide, Wide Graph dfs and similar, dp, graphs, greedy, trees	1800	x6042
1805B	The String Has a Target greedy, strings	800	x18171
1804D	Accommodation brute force, dp, greedy, implementation	2000	x4418
1804C	Pull Your Luck brute force, greedy, math, number theory	1500	x11520
1804B	Vaccination greedy, implementation	1000	x13778
1804A	Lame King greedy, math	800	x17677
1802B	Settlement of Guinea Pigs greedy, implementation, math	1000	x12901
1802A	Likes greedy, implementation	800	x15514
1801D	The way home binary search, data structures, dp, graphs, greedy, shortest paths, sortings	2100	x2041
1801C	Music Festival binary search, data structures, dp, greedy, sortings	1900	x3223
1801B	Buying gifts data structures, greedy, sortings	1800	x5802
1800E2	Unforgivable Curse (hard version) brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, strings	1500	x12048
1800E1	Unforgivable Curse (easy version) brute force, constructive algorithms, dsu, graphs, greedy, strings	1400	x12151
1800D	Remove Two Letters data structures, greedy, hashing, strings	1200	x21690
1800C2	Powering the Hero (hard version) data structures, greedy	1100	x21348
1800C1	Powering the Hero (easy version) data structures, greedy	1000	x22367
1800B	Count the Number of Pairs greedy, strings	1000	x23950
1799F	Halve or Subtract binary search, brute force, dp, greedy, sortings	2700	x767
1799E	City Union constructive algorithms, dfs and similar, dsu, geometry, greedy, implementation, math	2300	x1154
1799C	Double Lexicographically Minimum greedy, strings	1700	x5454
1799B	Equalize by Divide brute force, constructive algorithms, greedy, math	1200	x10815
1799A	Recent Actions data structures, greedy, implementation, math	800	x11356
1798D	Shocking Arrangement constructive algorithms, greedy, math	1600	x9051
1798C	Candy Store greedy, math, number theory	1700	x7782
1798B	Three Sevens brute force, data structures, greedy, implementation	1000	x15882