Problemset - Codeforces

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Educational Codeforces Round 167 (Rated for Div. 2)
22:46:32
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Problems

#	Name
1981F	Turtle and Paths on a Tree data structures, dp, trees	3000	x184
1979F	Kostyanych's Theorem brute force, constructive algorithms, graphs, interactive	2900	x211
1976F	Remove Bridges data structures, dfs and similar, dp, greedy, sortings, trees	2800	x404
1975G	Zimpha Fan Club fft, greedy, math, strings	3000	x186
1969F	Card Pairing dp, greedy, hashing, implementation	3000	x181
1967D	Long Way to be Non-decreasing binary search, dfs and similar, graphs, implementation, shortest paths, two pointers	2800	x528
1965D	Missing Subarray Sum constructive algorithms	2900	x314
1956F	Nene and the Passing Game constructive algorithms, data structures, dsu, graphs, sortings	3000	x299
1949K	Make Triangle constructive algorithms, math	2800	x263
1949E	Damage per Second brute force, math	2900	x89
1943E1	MEX Game 2 (Easy Version) binary search, brute force, greedy	2900	x391
1943D2	Counting Is Fun (Hard Version) combinatorics, dp	2800	x641
1942G	Bessie and Cards combinatorics, dp, math	2800	x400
1938L	XOR Operations	2800	x256
1938I	Symmetric Boundary	2800	x55
1938B	Attraction Score	3000	x171
1935F	Andrey's Tree binary search, constructive algorithms, data structures, dfs and similar, dsu, greedy, implementation, trees	2800	x411
1934E	Weird LCM Operations brute force, constructive algorithms, number theory	3000	x198
1928F	Digital Patterns combinatorics, data structures, implementation, math	2900	x222
1923F	Shrink-Reverse binary search, brute force, greedy, hashing, implementation, string suffix structures, strings	2800	x345
1920F2	Smooth Sailing (Hard Version) binary search, data structures, dsu, geometry, graphs, trees	3000	x426
1919F2	Wine Factory (Hard Version) data structures, dp, flows, greedy, matrices	2800	x759
1916F	Group Division constructive algorithms, dfs and similar, graphs, greedy	2900	x425
1913F	Palindromic Problem binary search, data structures, hashing, string suffix structures, strings	2800	x295
1910J	Two Colors *special problem	2900	x47
1909G	Pumping Lemma hashing, strings	3000	x354
1906I	Contingency Plan 2 graph matchings	2900	x130
1906G	Grid Game 2 games, number theory	2900	x157
1906D	Spaceship Exploration binary search, geometry	2800	x96
1906C	Cursed Game interactive	3000	x167
1904F	Beautiful Tree data structures, dfs and similar, graphs, implementation, trees	2800	x317
1901F	Landscaping binary search, geometry, two pointers	2900	x147
1900F	Local Deletions binary search, data structures, implementation	2800	x267
1889D	Game of Stacks brute force, dfs and similar, graphs, implementation, trees	3000	x538
1884E	Hard Design greedy, implementation, math	2800	x270
1879F	Last Man Standing brute force, data structures, number theory	2800	x477
1874E	Jellyfish and Hack dp, math	3000	x286
1874D	Jellyfish and Miku divide and conquer, dp, math, probabilities	2800	x674
1870F	Lazy Numbers binary search, math	2900	x469
1868D	Flower-like Pseudotree constructive algorithms, graphs, greedy, implementation, trees	3000	x257
1866J	Jackets and Packets dp	2800	x271
1863G	Swaps combinatorics, dp, graphs, math	2800	x585
1860F	Evaluate RBS data structures, geometry, implementation, math, sortings	2900	x266
1854E	Game Bundles brute force, constructive algorithms, dp, greedy, math	3000	x388
1854D	Michael and Hotel binary search, interactive, trees	3000	x529
1852D	Miriany and Matchstick constructive algorithms, dp, greedy	2800	x433
1847E	Triangle Platinum? brute force, combinatorics, implementation, interactive, math, probabilities	2900	x321
1845F	Swimmers in the Pool dp, fft, math, number theory	2800	x358
1844G	Tree Weights bitmasks, constructive algorithms, data structures, dfs and similar, implementation, math, matrices, number theory, trees	3000	x672
1844F2	Min Cost Permutation (Hard Version) binary search, constructive algorithms, data structures, greedy, math, sortings	2800	x376
1842H	Tenzing and Random Real Numbers bitmasks, dp, graphs, math, probabilities	3000	x577
1842G	Tenzing and Random Operations combinatorics, dp, math, probabilities	2800	x958
1838F	Stuck Conveyor binary search, constructive algorithms, interactive	3000	x305
1835D	Doctor's Brown Hypothesis dfs and similar, graphs, math, number theory	2900	x457
1830D	Mex Tree brute force, dp, trees	2800	x616
1827D	Two Centroids data structures, dfs and similar, greedy, trees	2800	x716
1826F	Fading into Fog geometry, interactive, math, probabilities	2800	x342
1824D	LuoTianyi and the Function data structures	3000	x466
1819D	Misha and Apples brute force, data structures, dp, two pointers	2800	x606
1810H	Last Number combinatorics, math	2900	x133
1810F	M-tree data structures, math, sortings, trees	2800	x550
1809G	Prediction combinatorics, dp, math	2800	x428
1808E3	Minibuses on Venus (hard version) brute force, combinatorics, dp, math	2800	x426
1806F2	GCD Master (hard version) greedy, math, sortings	2900	x281
1806F1	GCD Master (easy version) greedy, math, number theory, sortings	2900	x341
1801E	Gasoline prices data structures, divide and conquer, dsu, hashing, trees	3000	x437
1797F	Li Hua and Path data structures, dfs and similar, divide and conquer, dsu, trees	3000	x337
1796F	Strange Triples brute force, math, number theory	2900	x170
1792F2	Graph Coloring (hard version) brute force, combinatorics, divide and conquer, dp, fft, graphs	2900	x375
1787G	Colorful Tree Again brute force, data structures, trees	3000	x408
1783G	Weighed Tree Radius data structures, divide and conquer, implementation, trees	2800	x422
1779G	The Game of the Century constructive algorithms, graphs, shortest paths	3000	x309
1776M	Parmigiana With Seafood binary search, dp, greedy, trees	3000	x358
1776D	Teamwork constructive algorithms, greedy, math	2800	x346
1773J	Jumbled Trees constructive algorithms, math	2900	x104
1773G	Game of Questions bitmasks, combinatorics, dp, fft, math, probabilities	2800	x325
1768F	Wonderful Jump dp, greedy	2900	x795
1766F	MCF flows	2800	x263
1765J	Hero to Zero graph matchings, math	2900	x188
1765I	Infinite Chess implementation, shortest paths	2800	x183
1764G2	Doremy's Perfect DS Class (Medium Version) binary search, interactive	3000	x507
1764G1	Doremy's Perfect DS Class (Easy Version) binary search, interactive	2900	x560
1763F	Edge Queries data structures, dfs and similar, dp, dsu, graphs, trees	3000	x428
1758F	Decent Division constructive algorithms, data structures	3000	x161
1749F	Distance to the Path data structures, dfs and similar, trees	2800	x488
1748F	Circular Xor Reversal bitmasks, constructive algorithms	3000	x327
1747E	List Generation combinatorics, dp, math	2900	x490
1746F	Kazaee data structures, hashing, probabilities	2800	x1598
1743G	Antifibonacci Cut bitmasks, combinatorics, constructive algorithms, data structures, dp, hashing, math	3000	x248
1738G	Anti-Increasing Addicts constructive algorithms, dp, greedy, math	2900	x406
1735F	Pebbles and Beads data structures, geometry	2900	x219
1732E	Location data structures, dp, math, number theory	2800	x419
1726F	Late For Work (submissions are not allowed) data structures, greedy, schedules, shortest paths	2900	x131
1725I	Imitating the Key Tree combinatorics, dsu, trees	2800	x193
1725D	Deducing Sortability binary search, bitmasks, math	2900	x119
1721F	Matching Reduction brute force, constructive algorithms, dfs and similar, flows, graph matchings, graphs, interactive	2800	x372
1713F	Lost Array bitmasks, combinatorics, constructive algorithms, dp, math	2900	x519
1707D	Partial Virtual Trees combinatorics, dfs and similar, dp, math, trees	3000	x591
1705F	Mark and the Online Exam bitmasks, constructive algorithms, interactive, probabilities	2900	x587
1698G	Long Binary String bitmasks, math, matrices, meet-in-the-middle, number theory	2900	x307

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