Problemset - Codeforces

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Codeforces Round (Div. 2)
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Problems

#	Name
1851G	Vlad and the Mountains binary search, data structures, dsu, graphs, implementation, sortings, trees, two pointers	2000	x3070
1851D	Prefix Permutation Sums implementation, math	1300	x14680
1850H	The Third Letter dfs and similar, dsu, graphs, greedy, implementation	1700	x7788
1850G	The Morning Star combinatorics, data structures, geometry, implementation, math, sortings	1500	x11661
1850F	We Were Both Children brute force, implementation, math, number theory	1300	x17918
1850E	Cardboard for Pictures binary search, geometry, implementation, math	1100	x21701
1850D	Balanced Round brute force, greedy, implementation, sortings	900	x33987
1850C	Word on the Paper implementation, strings	800	x42345
1850B	Ten Words of Wisdom implementation, sortings	800	x41409
1850A	To My Critics implementation, sortings	800	x53004
1849A	Morning Sandwich implementation, math	800	x27386
1848E	Vika and Stone Skipping brute force, implementation, math, number theory	2600	x758
1848B	Vika and the Bridge binary search, data structures, greedy, implementation, math, sortings	1200	x13955
1847E	Triangle Platinum? brute force, combinatorics, implementation, interactive, math, probabilities	2900	x321
1847D	Professor Higashikata data structures, dsu, greedy, implementation, strings	1900	x3654
1846F	Rudolph and Mimic constructive algorithms, implementation, interactive	1800	x2971
1846E2	Rudolf and Snowflakes (hard version) binary search, brute force, implementation, math	1800	x6742
1846E1	Rudolf and Snowflakes (simple version) brute force, implementation, math	1300	x15909
1846B	Rudolph and Tic-Tac-Toe brute force, implementation, strings	800	x26416
1846A	Rudolph and Cut the Rope implementation, math	800	x31901
1845E	Boxes and Balls dp, implementation, math	2500	x1289
1845B	Come Together geometry, implementation, math	900	x21163
1845A	Forbidden Integer constructive algorithms, implementation, math, number theory	800	x25571
1844G	Tree Weights bitmasks, constructive algorithms, data structures, dfs and similar, implementation, math, matrices, number theory, trees	3000	x673
1844C	Particles dp, greedy, implementation, math	1300	x15145
1841B	Keep it Beautiful implementation	1000	x20973
1840E	Character Blocking data structures, hashing, implementation	1600	x7743
1840A	Cipher Shifer implementation, strings, two pointers	800	x33266
1839A	The Good Array greedy, implementation, math	800	x17236
1837F	Editorial for Two binary search, data structures, greedy, implementation	2400	x2104
1836A	Destroyer implementation, sortings	800	x20015
1835F	Good Graph bitmasks, dfs and similar, graph matchings, graphs, implementation	3500	x157
1835A	k-th equality brute force, implementation, math	1700	x7587
1834E	MEX of LCM binary search, data structures, implementation, math, number theory	2300	x2113
1834D	Survey in Class brute force, data structures, greedy, implementation, sortings	1900	x4466
1833G	Ksyusha and Chinchilla constructive algorithms, dfs and similar, dp, dsu, greedy, implementation, trees	1800	x5102
1833F	Ira and Flamenco combinatorics, constructive algorithms, data structures, implementation, math, sortings, two pointers	1700	x6957
1833A	Musical Puzzle implementation, strings	800	x32002
1832D2	Red-Blue Operations (Hard Version) binary search, constructive algorithms, greedy, implementation, math	2400	x1828
1832D1	Red-Blue Operations (Easy Version) binary search, greedy, implementation, math	2100	x2841
1832C	Contrast Value greedy, implementation	1200	x19121
1829G	Hits Different data structures, dp, implementation, math	1600	x9767
1829E	The Lakes dfs and similar, dsu, graphs, implementation	1100	x18938
1829D	Gold Rush brute force, dfs and similar, dp, implementation	1000	x25022
1829C	Mr. Perfectly Fine bitmasks, greedy, implementation	800	x27695
1829B	Blank Space implementation	800	x42567
1829A	Love Story implementation, strings	800	x47860
1826E	Walk the Runway bitmasks, brute force, data structures, dp, graphs, implementation, sortings	2400	x1531
1826A	Trust Nobody brute force, greedy, implementation, sortings	1200	x14747
1824A	LuoTianyi and the Show greedy, implementation	1400	x10995
1822A	TubeTube Feed brute force, implementation	800	x23877
1821C	Tear It Apart brute force, implementation, math, strings	1300	x13850
1820A	Yura's New Name implementation, strings	800	x16489
1819C	The Fox and the Complete Tree Traversal constructive algorithms, dp, implementation, math, trees	2400	x1418
1819B	The Butcher geometry, greedy, implementation, sortings, two pointers	1900	x3482
1818A	Politics greedy, implementation	800	x12787
1817D	Toy Machine constructive algorithms, games, implementation	2700	x687
1815B	Sum Graph brute force, constructive algorithms, graphs, implementation, interactive, shortest paths, trees	2000	x2931
1814A	Coins implementation, math	800	x26712
1812G	Colour Vision *special problem, implementation		x535
1812B	Was it Rated? special problem, special problem, *special problem, brute force, implementation		x5623
1811F	Is It Flower? dfs and similar, graphs, implementation	2100	x1765
1811D	Umka and a Long Flight constructive algorithms, implementation, math	1600	x7204
1811B	Conveyor Belts implementation, math	1000	x19939
1809F	Traveling in Berland binary search, data structures, graphs, greedy, implementation	2500	x726
1809E	Two Tanks binary search, dp, implementation, math	2400	x805
1809A	Garland implementation	800	x23626
1808C	Unlucky Numbers brute force, dp, greedy, implementation	1900	x3657
1808A	Lucky Numbers brute force, implementation	900	x17651
1807G2	Subsequence Addition (Hard Version) bitmasks, dp, greedy, implementation, sortings	1100	x18242
1807G1	Subsequence Addition (Easy Version) brute force, data structures, dp, greedy, implementation, sortings	1100	x18207
1807F	Bouncy Ball brute force, dfs and similar, implementation	1700	x6025
1807E	Interview binary search, implementation, interactive	1300	x12180
1807D	Odd Queries data structures, implementation	900	x30006
1807C	Find and Replace greedy, implementation, strings	800	x29658
1807A	Plus or Minus implementation	800	x57975
1805F1	Survival of the Weakest (easy version) binary search, brute force, implementation, math, sortings	2600	x849
1804G	Flow Control data structures, dsu, implementation	3500	x194
1804D	Accommodation brute force, dp, greedy, implementation	2000	x4492
1804B	Vaccination greedy, implementation	1000	x13947
1802B	Settlement of Guinea Pigs greedy, implementation, math	1000	x13061
1802A	Likes greedy, implementation	800	x15611
1800G	Symmetree dfs and similar, hashing, implementation, trees	2200	x1973
1800A	Is It a Cat? implementation, strings	800	x30482
1799E	City Union constructive algorithms, dfs and similar, dsu, geometry, greedy, implementation, math	2300	x1171
1799A	Recent Actions data structures, greedy, implementation, math	800	x11441
1798B	Three Sevens brute force, data structures, greedy, implementation	1000	x16174
1798A	Showstopper greedy, implementation, sortings	800	x19475
1797D	Li Hua and Tree brute force, data structures, dfs and similar, dp, implementation, trees	1900	x3786
1797A	Li Hua and Maze constructive algorithms, flows, graphs, greedy, implementation	800	x17118
1796B	Asterisk-Minor Template implementation, strings	1000	x16206
1796A	Typical Interview Problem brute force, implementation, strings	800	x18658
1795C	Tea Tasting binary search, data structures, implementation	1500	x11824
1795A	Two Towers brute force, implementation, strings	800	x23403
1794E	Labeling the Tree with Distances data structures, dp, greedy, hashing, implementation, trees	2400	x1033
1793F	Rebrending brute force, data structures, divide and conquer, implementation	2600	x1321
1793D	Moscow Gorillas binary search, dp, greedy, implementation, math, two pointers	1800	x5904
1791C	Prepend and Append implementation, two pointers	800	x42170
1791B	Following Directions geometry, implementation	800	x42745
1791A	Codeforces Checking implementation, strings	800	x57110