Problemset - Codeforces

Problems

#	Name
2135F	To the Infinity data structures, hashing, math, trees	3500	x701
2134D	Sliding Tree constructive algorithms, dfs and similar, greedy, implementation, trees	2300	x3850
2133E	I Yearned For The Mines constructive algorithms, dfs and similar, dp, greedy, trees	2500	x1824
2131D	Arboris Contractio data structures, graphs, greedy, trees	1400	x15203
2127H	23 Rises Again brute force, dfs and similar, dp, flows, graph matchings, graphs, greedy, implementation, probabilities, trees	3100	x2819
2127E	Ancient Tree constructive algorithms, data structures, dfs and similar, dsu, greedy, trees	2100	x5479
2127D	Root was Built by Love, Broken by Destiny combinatorics, dfs and similar, graphs, trees	1800	x8509
2126G2	Big Wins! (hard version) binary search, data structures, divide and conquer, dsu, trees, two pointers	2400	x1268
2126F	1-1-1, Free Tree! brute force, data structures, dfs and similar, graphs, implementation, trees	2000	x4530
2124I	Lexicographic Partition constructive algorithms, math, trees	3500	x778
2124H	Longest Good Subsequence dp, math, trees	3400	x267
2122G	Tree Parking combinatorics, fft, math, trees	3300	x2443
2120C	Divine Tree constructive algorithms, greedy, math, sortings, trees	1400	x13209
2119F	Volcanic Eruptions dfs and similar, dp, greedy, shortest paths, trees	3300	x199
2118F	Shifts and Swaps data structures, graphs, hashing, trees	3100	x307
2117F	Wildflower combinatorics, dfs and similar, trees	1800	x6245
2115B	Gellyfish and Camellia Japonica brute force, constructive algorithms, dfs and similar, dp, graphs, greedy, trees	2100	x6007
2114E	Kirei Attacks the Estate dfs and similar, dp, greedy, trees	1400	x14742
2113E	From Kazan with Love dfs and similar, graphs, implementation, trees	2800	x441
2112E	Tree Colorings combinatorics, dfs and similar, dp, graphs, math, number theory, trees	2200	x3527
2112D	Reachability and Tree constructive algorithms, dfs and similar, graphs, trees	1700	x9971
2108E	Spruce Dispute constructive algorithms, dfs and similar, graphs, greedy, implementation, shortest paths, trees	2600	x949
2107E	Ain and Apple Tree binary search, constructive algorithms, greedy, math, trees	2600	x968
2107D	Apple Tree Traversing brute force, dfs and similar, greedy, implementation, trees	2100	x3681
2106G2	Baudelaire (hard version) binary search, dfs and similar, divide and conquer, implementation, interactive, trees	2500	x673
2106G1	Baudelaire (easy version) binary search, constructive algorithms, divide and conquer, greedy, interactive, trees	2200	x1714
2104G	Modulo 3 data structures, divide and conquer, dsu, graphs, trees	2700	x588
2101F	Shoo Shatters the Sunshine combinatorics, dp, trees	3300	x308
2101E	Kia Bakes a Cake data structures, dp, greedy, trees	3100	x3303
2097B	Baggage Claim combinatorics, dfs and similar, dp, dsu, graphs, implementation, math, trees	2300	x2025
2093G	Shorten the Array binary search, bitmasks, data structures, dfs and similar, greedy, strings, trees, two pointers	1900	x4129
2081D	MST in Modulo Graph constructive algorithms, dsu, graphs, greedy, math, number theory, sortings, trees	2600	x1457
2071E	LeaFall combinatorics, dp, probabilities, trees	2600	x857
2071C	Trapmigiano Reggiano constructive algorithms, data structures, dfs and similar, dp, greedy, sortings, trees	1700	x10081
2070D	Tree Jumps dfs and similar, dp, trees	1600	x11841
2068D	Morse Code dp, sortings, trees	3100	x280
2065F	Skibidus and Slay data structures, dfs and similar, graphs, greedy, trees	1700	x7530
2064D	Eating binary search, bitmasks, brute force, data structures, dp, greedy, trees, two pointers	1900	x6109
2063F2	Counting Is Not Fun (Hard Version) combinatorics, data structures, dfs and similar, dsu, graphs, implementation, trees	2700	x989
2063F1	Counting Is Not Fun (Easy Version) combinatorics, data structures, dfs and similar, dp, dsu, graphs, hashing, implementation, math, trees	2400	x1605
2063E	Triangle Tree data structures, dfs and similar, dp, greedy, trees	2300	x2472
2063C	Remove Exactly Two brute force, data structures, dfs and similar, dp, graphs, greedy, sortings, trees	1600	x15583
2062E2	The Game (Hard Version) data structures, dfs and similar, games, graphs, implementation, trees	3000	x490
2062E1	The Game (Easy Version) data structures, dfs and similar, games, graphs, greedy, trees	2000	x4480
2062D	Balanced Tree dfs and similar, dp, graphs, greedy, trees	2200	x3700
2053E	Resourceful Caterpillar Sequence dfs and similar, dp, games, graphs, greedy, trees	1900	x4656
2052M	Managing Cluster dp, graphs, math, trees	2700	x501
2050G	Tree Destruction dfs and similar, dp, trees	1900	x5719
2048F	Kevin and Math Class brute force, data structures, divide and conquer, dp, implementation, math, trees	2500	x1379
2044G2	Medium Demon Problem (hard version) dfs and similar, dp, dsu, graphs, implementation, trees	1900	x4134
2044G1	Medium Demon Problem (easy version) dfs and similar, graph matchings, graphs, implementation, trees	1700	x7807
2042E	Vertex Pairs binary search, brute force, data structures, dfs and similar, divide and conquer, greedy, implementation, trees	2900	x553
2041I	Auto Complete binary search, data structures, hashing, implementation, sortings, strings, trees	2300	x718
2040E	Control of Randomness combinatorics, dfs and similar, dp, graphs, greedy, math, probabilities, trees	2100	x2869
2040D	Non Prime Tree brute force, constructive algorithms, dfs and similar, greedy, number theory, trees, two pointers	1900	x6137
2035G1	Go Learn! (Easy Version) dp, trees	3300	x179
2035F	Tree Operations binary search, brute force, dfs and similar, dp, trees	2500	x1140
2033G	Sakurako and Chefir data structures, dfs and similar, dp, greedy, trees	2200	x2106
2032D	Genokraken constructive algorithms, data structures, graphs, greedy, implementation, interactive, trees, two pointers	1800	x6421
2031E	Penchick and Chloe's Trees data structures, dfs and similar, dp, greedy, implementation, math, sortings, trees	2100	x2817
2029D	Cool Graph constructive algorithms, data structures, dfs and similar, dsu, graphs, greedy, trees	1900	x4082
2028E	Alice's Adventures in the Rabbit Hole combinatorics, dfs and similar, dp, games, greedy, math, probabilities, trees	2300	x2047
2026F	Bermart Ice Cream data structures, dfs and similar, divide and conquer, dp, implementation, trees	2700	x434
2025F	Choose Your Queries constructive algorithms, dfs and similar, dp, graphs, greedy, trees	2700	x1325
2023E	Tree of Life dp, greedy, trees	3300	x214
2021E3	Digital Village (Extreme Version) data structures, dfs and similar, dp, dsu, graphs, greedy, math, trees	2800	x757
2021E2	Digital Village (Hard Version) data structures, dp, dsu, graphs, math, trees	2500	x1299
2021E1	Digital Village (Easy Version) brute force, data structures, dfs and similar, dp, dsu, fft, graphs, greedy, implementation, math, trees	2300	x1999
2020D	Connect the Dots brute force, dp, dsu, graphs, math, trees	1800	x7687
2018C	Tree Pruning brute force, dfs and similar, greedy, sortings, trees	1700	x10587
2014F	Sheriff's Defense dfs and similar, dp, greedy, trees	2000	x5579
2013F2	Game in Tree (Hard Version) binary search, data structures, trees	3500	x173
2013F1	Game in Tree (Easy Version) binary search, brute force, data structures, dp, games, greedy, implementation, trees	2700	x693
2006E	Iris's Full Binary Tree brute force, data structures, dfs and similar, trees	3100	x336
2006B	Iris and the Tree brute force, data structures, dfs and similar, dsu, math, trees	1800	x4506
2006A	Iris and Game on the Tree constructive algorithms, dfs and similar, games, graphs, greedy, trees	1700	x10087
2002D2	DFS Checker (Hard Version) binary search, data structures, dfs and similar, graphs, hashing, trees	2300	x2968
2002D1	DFS Checker (Easy Version) brute force, data structures, dfs and similar, graphs, hashing, trees	1900	x5229
2001E2	Deterministic Heap (Hard Version) combinatorics, dp, trees	2900	x314
2001E1	Deterministic Heap (Easy Version) combinatorics, dp, math, trees	2400	x1598
2001C	Guess The Tree binary search, brute force, dfs and similar, divide and conquer, dsu, greedy, interactive, trees	1500	x13242
1997D	Maximize the Root binary search, dfs and similar, dp, greedy, trees	1500	x16587
1994F	Stardew Valley constructive algorithms, dfs and similar, graphs, trees	2500	x1680
1994E	Wooden Game bitmasks, greedy, math, trees	2000	x5758
1994D	Funny Game constructive algorithms, dsu, graphs, greedy, math, number theory, trees	1900	x7950
1990E2	Catch the Mole(Hard Version) binary search, data structures, dfs and similar, divide and conquer, interactive, trees	2600	x1234
1990E1	Catch the Mole(Easy Version) binary search, data structures, dfs and similar, interactive, trees	2500	x1256
1988D	The Omnipotent Monster Killer brute force, dfs and similar, dp, trees	2000	x6289
1987G2	Spinning Round (Hard Version) divide and conquer, dp, trees	3500	x257
1987G1	Spinning Round (Easy Version) divide and conquer, dp, trees	2900	x364
1987E	Wonderful Tree! brute force, data structures, dfs and similar, dsu, greedy, trees	2000	x4231
1986F	Non-academic Problem dfs and similar, graphs, trees	1900	x7069
1984E	Shuffle dp, greedy, trees	2400	x1931
1983G	Your Loss bitmasks, brute force, dp, trees	3000	x369
1981F	Turtle and Paths on a Tree data structures, dp, trees	3000	x377
1980G	Yasya and the Mysterious Tree bitmasks, data structures, dfs and similar, graphs, greedy, strings, trees	2300	x1833
1976F	Remove Bridges data structures, dfs and similar, dp, greedy, sortings, trees	2800	x1048
1976E	Splittable Permutations combinatorics, data structures, dfs and similar, greedy, math, trees	2500	x1374
1975E	Chain Queries binary search, data structures, dfs and similar, implementation, trees	2100	x3020
1975D	Paint the Tree brute force, dfs and similar, dp, greedy, shortest paths, trees	1700	x7784