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	x3075
1851D	Prefix Permutation Sums implementation, math	1300	x14689
1850H	The Third Letter dfs and similar, dsu, graphs, greedy, implementation	1700	x7798
1850G	The Morning Star combinatorics, data structures, geometry, implementation, math, sortings	1500	x11684
1850F	We Were Both Children brute force, implementation, math, number theory	1300	x17967
1850E	Cardboard for Pictures binary search, geometry, implementation, math	1100	x21741
1850D	Balanced Round brute force, greedy, implementation, sortings	900	x34059
1850C	Word on the Paper implementation, strings	800	x42384
1850B	Ten Words of Wisdom implementation, sortings	800	x41453
1850A	To My Critics implementation, sortings	800	x53073
1849A	Morning Sandwich implementation, math	800	x27402
1848E	Vika and Stone Skipping brute force, implementation, math, number theory	2600	x759
1848B	Vika and the Bridge binary search, data structures, greedy, implementation, math, sortings	1200	x13983
1847E	Triangle Platinum? brute force, combinatorics, implementation, interactive, math, probabilities	2900	x321
1847D	Professor Higashikata data structures, dsu, greedy, implementation, strings	1900	x3657
1846F	Rudolph and Mimic constructive algorithms, implementation, interactive	1800	x2975
1846E2	Rudolf and Snowflakes (hard version) binary search, brute force, implementation, math	1800	x6749
1846E1	Rudolf and Snowflakes (simple version) brute force, implementation, math	1300	x15935
1846B	Rudolph and Tic-Tac-Toe brute force, implementation, strings	800	x26430
1846A	Rudolph and Cut the Rope implementation, math	800	x31916
1845E	Boxes and Balls dp, implementation, math	2500	x1289
1845B	Come Together geometry, implementation, math	900	x21173
1845A	Forbidden Integer constructive algorithms, implementation, math, number theory	800	x25610
1844G	Tree Weights bitmasks, constructive algorithms, data structures, dfs and similar, implementation, math, matrices, number theory, trees	3000	x674
1844C	Particles dp, greedy, implementation, math	1300	x15159
1841B	Keep it Beautiful implementation	1000	x20989
1840E	Character Blocking data structures, hashing, implementation	1600	x7756
1840A	Cipher Shifer implementation, strings, two pointers	800	x33278
1839A	The Good Array greedy, implementation, math	800	x17241
1837F	Editorial for Two binary search, data structures, greedy, implementation	2400	x2111
1836A	Destroyer implementation, sortings	800	x20024
1835F	Good Graph bitmasks, dfs and similar, graph matchings, graphs, implementation	3500	x157
1835A	k-th equality brute force, implementation, math	1700	x7593
1834E	MEX of LCM binary search, data structures, implementation, math, number theory	2300	x2115
1834D	Survey in Class brute force, data structures, greedy, implementation, sortings	1900	x4475
1833G	Ksyusha and Chinchilla constructive algorithms, dfs and similar, dp, dsu, greedy, implementation, trees	1800	x5112
1833F	Ira and Flamenco combinatorics, constructive algorithms, data structures, implementation, math, sortings, two pointers	1700	x6966
1833A	Musical Puzzle implementation, strings	800	x32023
1832D2	Red-Blue Operations (Hard Version) binary search, constructive algorithms, greedy, implementation, math	2400	x1838
1832D1	Red-Blue Operations (Easy Version) binary search, greedy, implementation, math	2100	x2847
1832C	Contrast Value greedy, implementation	1200	x19167
1829G	Hits Different data structures, dp, implementation, math	1600	x9790
1829E	The Lakes dfs and similar, dsu, graphs, implementation	1100	x18958
1829D	Gold Rush brute force, dfs and similar, dp, implementation	1000	x25054
1829C	Mr. Perfectly Fine bitmasks, greedy, implementation	800	x27707
1829B	Blank Space implementation	800	x42638
1829A	Love Story implementation, strings	800	x47927
1826E	Walk the Runway bitmasks, brute force, data structures, dp, graphs, implementation, sortings	2400	x1534
1826A	Trust Nobody brute force, greedy, implementation, sortings	1200	x14757
1824A	LuoTianyi and the Show greedy, implementation	1400	x11011
1822A	TubeTube Feed brute force, implementation	800	x23901
1821C	Tear It Apart brute force, implementation, math, strings	1300	x13866
1820A	Yura's New Name implementation, strings	800	x16492
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	x3485
1818A	Politics greedy, implementation	800	x12791
1817D	Toy Machine constructive algorithms, games, implementation	2700	x692
1815B	Sum Graph brute force, constructive algorithms, graphs, implementation, interactive, shortest paths, trees	2000	x2932
1814A	Coins implementation, math	800	x26756
1812G	Colour Vision *special problem, implementation		x536
1812B	Was it Rated? special problem, special problem, *special problem, brute force, implementation		x5624
1811F	Is It Flower? dfs and similar, graphs, implementation	2100	x1767
1811D	Umka and a Long Flight constructive algorithms, implementation, math	1600	x7207
1811B	Conveyor Belts implementation, math	1000	x19945
1809F	Traveling in Berland binary search, data structures, graphs, greedy, implementation	2500	x728
1809E	Two Tanks binary search, dp, implementation, math	2400	x807
1809A	Garland implementation	800	x23635
1808C	Unlucky Numbers brute force, dp, greedy, implementation	1900	x3661
1808A	Lucky Numbers brute force, implementation	900	x17671
1807G2	Subsequence Addition (Hard Version) bitmasks, dp, greedy, implementation, sortings	1100	x18274
1807G1	Subsequence Addition (Easy Version) brute force, data structures, dp, greedy, implementation, sortings	1100	x18230
1807F	Bouncy Ball brute force, dfs and similar, implementation	1700	x6032
1807E	Interview binary search, implementation, interactive	1300	x12205
1807D	Odd Queries data structures, implementation	900	x30062
1807C	Find and Replace greedy, implementation, strings	800	x29678
1807A	Plus or Minus implementation	800	x58078
1805F1	Survival of the Weakest (easy version) binary search, brute force, implementation, math, sortings	2600	x850
1804G	Flow Control data structures, dsu, implementation	3500	x194
1804D	Accommodation brute force, dp, greedy, implementation	2000	x4493
1804B	Vaccination greedy, implementation	1000	x13955
1802B	Settlement of Guinea Pigs greedy, implementation, math	1000	x13067
1802A	Likes greedy, implementation	800	x15614
1800G	Symmetree dfs and similar, hashing, implementation, trees	2200	x1973
1800A	Is It a Cat? implementation, strings	800	x30508
1799E	City Union constructive algorithms, dfs and similar, dsu, geometry, greedy, implementation, math	2300	x1171
1799A	Recent Actions data structures, greedy, implementation, math	800	x11445
1798B	Three Sevens brute force, data structures, greedy, implementation	1000	x16188
1798A	Showstopper greedy, implementation, sortings	800	x19480
1797D	Li Hua and Tree brute force, data structures, dfs and similar, dp, implementation, trees	1900	x3811
1797A	Li Hua and Maze constructive algorithms, flows, graphs, greedy, implementation	800	x17122
1796B	Asterisk-Minor Template implementation, strings	1000	x16215
1796A	Typical Interview Problem brute force, implementation, strings	800	x18666
1795C	Tea Tasting binary search, data structures, implementation	1500	x11840
1795A	Two Towers brute force, implementation, strings	800	x23409
1794E	Labeling the Tree with Distances data structures, dp, greedy, hashing, implementation, trees	2400	x1035
1793F	Rebrending brute force, data structures, divide and conquer, implementation	2600	x1323
1793D	Moscow Gorillas binary search, dp, greedy, implementation, math, two pointers	1800	x5913
1791C	Prepend and Append implementation, two pointers	800	x42230
1791B	Following Directions geometry, implementation	800	x42776
1791A	Codeforces Checking implementation, strings	800	x57180