Problemset - Codeforces

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Codeforces Round (Div. 2)
5 days

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Problems

#	Name
2183D1	Tree Coloring (Easy Version) constructive algorithms, dfs and similar, greedy, trees	1500	x8967
2183C	War Strategy binary search, greedy, math, two pointers	1500	x10789
2183B	Yet Another MEX Problem constructive algorithms, greedy	1100	x16283
2183A	Binary Array Game games	800	x23783
2182G	Short Garland combinatorics, data structures, dfs and similar, dp, trees	2800	x357
2182F2	Christmas Reindeer (hard version) bitmasks, brute force, combinatorics, data structures, greedy, math	2500	x1100
2182F1	Christmas Reindeer (easy version) bitmasks, brute force, combinatorics, dp, math	2300	x1279
2182E	New Year's Gifts binary search, data structures, greedy, sortings, two pointers	1800	x5634
2182D	Christmas Tree Decoration combinatorics, dp, greedy, math	1600	x9075
2182C	Production of Snowmen brute force, combinatorics, dp	1200	x15705
2182B	New Year Cake brute force	800	x23644
2182A	New Year String constructive algorithms, greedy, implementation, strings	800	x25560
2181M	Medical Parity dp, strings	1700	x3558
2181L	LLM Training math, string suffix structures	2800	x139
2181K	Knit the Grid 2-sat, constructive algorithms, graphs, matrices	3500	x70
2181J	Jinx or Jackpot brute force, dp, math, probabilities	2300	x720
2181I	Irrigation Interlock geometry	3500	x52
2181H	Honey Cake brute force, math, number theory	1200	x6751
2181G	Greta's Game binary search, dp, graphs, greedy, math	2400	x656
2181F	Fragmented Nim games	1600	x3636
2181E	Elevator Against Humanity brute force, constructive algorithms, greedy, sortings	2900	x148
2181D	Doorway binary search, data structures, sortings	2000	x1383
2181C	Cacti Classification binary search, constructive algorithms, interactive, math	3200	x153
2181B	Battle of Arrays data structures, games, greedy	1400	x5870
2181A	Alphabet City binary search, math, strings	1300	x3798
2180H2	Bug Is Feature (Conditional Version) games	3500	x106
2180H1	Bug Is Feature (Unconditional Version) games	3400	x121
2180G	Balance bitmasks, combinatorics, implementation, math	3500	x137
2180F2	Control Car (Hard Version) combinatorics, dp, matrices, probabilities	3200	x226
2180F1	Control Car (Easy Version) combinatorics, dp, probabilities	2800	x407
2180E	No Effect XOR bitmasks, divide and conquer, dp, greedy, math	2300	x1755
2180D	Insolvable Disks data structures, dp, greedy, math	1900	x4281
2180C	XOR-factorization bitmasks, constructive algorithms, dp, greedy, number theory	1900	x6506
2180B	Ashmal greedy, strings	800	x24703
2180A	Carnival Wheel brute force, number theory	800	x25987
2179H	Blackslex and Plants bitmasks, data structures, dp, implementation, math	2200	x1318
2179G	Blackslex and Penguin Migration brute force, interactive, math	2200	x1223
2179F	Blackslex and Another RGB Walking communication, constructive algorithms, graphs, interactive, number theory, trees	2000	x2797
2179E	Blackslex and Girls constructive algorithms, geometry, math	1800	x5846
2179D	Blackslex and Penguin Civilization bitmasks, constructive algorithms, greedy, math	1300	x13660
2179C	Blackslex and Number Theory implementation, math, number theory, sortings	1100	x22480
2179B	Blackslex and Showering dp, greedy, implementation	800	x28564
2179A	Blackslex and Password math, strings	800	x34643
2178I	Numbers or Fireworks bitmasks, combinatorics, dp, graphs	3300	x219
2178H	Create or Duplicate bitmasks, graphs, number theory, shortest paths	3300	x316
2178G	deCH OR Dations bitmasks, data structures, dp, hashing, probabilities	2800	x597
2178F	Conquer or of Forest combinatorics, math, trees	2200	x1842
2178E	Flatten or Concatenate binary search, divide and conquer, interactive	2000	x3706
2178D	Xmas or Hysteria constructive algorithms, greedy, implementation, math	1700	x6758
2178C	First or Second dp, greedy, implementation	1200	x15875
2178B	Impost or Sus dp, greedy, implementation, strings	900	x21773
2178A	Yes or Yes greedy, strings	800	x25952
2176F	Omega Numbers bitmasks, combinatorics, dp, math, number theory	2400	x1507
2176E	Remove at the lowest cost data structures, dfs and similar, dp, dsu, greedy, implementation, trees	2400	x1294
2176D	Fibonacci Paths data structures, dp, graphs, sortings	1800	x5837
2176C	Odd Process greedy, sortings	1300	x15886
2176B	Optimal Shifts bitmasks, greedy, strings	1000	x23120
2176A	Operations with Inversions greedy, implementation, math	800	x29263
2175B	XOR Array constructive algorithms, math	1300	x12381
2175A	Little Fairy's Painting implementation	800	x18884
2174F	Mosaic Tree combinatorics, dp, fft, math, trees	2800	x477
2174E2	Game of Scientists (Version 2) binary search, chinese remainder theorem, dfs and similar, interactive, math	3200	x98
2174E1	Game of Scientists (Version 1) chinese remainder theorem, constructive algorithms, interactive, math	3100	x136
2174D	Secret Message data structures, dp, greedy, trees	3400	x298
2174C2	Beautiful Patterns (Hard Version) combinatorics, math, probabilities	2500	x1045
2174C1	Beautiful Patterns (Easy Version) combinatorics, math, probabilities	2400	x1192
2174B	Wishing Cards dp	1900	x4029
2174A	Needle in a Haystack greedy, strings, two pointers	1200	x14493
2173F	Isla's Memory Thresholds binary search, brute force, data structures, divide and conquer, math	2600	x576
2173E	Shiro's Mirror Duel constructive algorithms, greedy, interactive, probabilities, sortings	2200	x1552
2173D	Taiga's Carry Chains bitmasks, brute force, dp, greedy, math	1900	x3687
2173C	Kanade's Perfect Multiples brute force, constructive algorithms, greedy, number theory	1400	x12574
2173B	Niko's Tactical Cards dp, greedy, math	1100	x18314
2173A	Sleeping Through Classes greedy, implementation	800	x23945
2172N	New Kingdom constructive algorithms, graphs, implementation	2800	x164
2172M	Maximum Distance To Port graphs, shortest paths	1300	x5942
2172L	Maximum Color Segment dp, implementation	2300	x807
2172K	Kindergarten Homework implementation, strings	2100	x851
2172J	Sliding Tiles data structures, divide and conquer, dsu	2300	x570
2172I	Birthday geometry	2000	x1099
2172H	Shuffling Cards with Problem Solver 68! hashing, string suffix structures, strings	2500	x303
2172G	Gene Editor	3300	x67
2172F	Cluster Computing System graphs, greedy, math	1600	x3979
2172E	Number Maze implementation	1200	x6007
2172D	Divisor Card Game combinatorics, dp	3100	x103
2172C	Circles Are Far from Each Other binary search, greedy	3100	x95
2172B	Buses greedy, sortings	1800	x2159
2172A	ASCII Art Contest implementation	800	x14717
2171H	Shiori Miyagi and Maximum Array Score binary search, data structures, dp, sortings	2400	x1028
2171G	Sakura Adachi and Optimal Sequences bitmasks, combinatorics, greedy, math	2000	x2358
2171F	Rae Taylor and Trees (hard version) binary search, constructive algorithms, data structures, dp, dsu, greedy, implementation, trees	1600	x7241
2171E	Anisphia Wynn Palettia and Good Permutations constructive algorithms, greedy, number theory	2000	x3684
2171D	Rae Taylor and Trees (easy version) binary search, data structures, dp, dsu, greedy, implementation, trees	1400	x11752
2171C2	Renako Amaori and XOR Game (hard version) bitmasks, games, greedy	1400	x11980
2171C1	Renako Amaori and XOR Game (easy version) bitmasks, games, greedy	1100	x19416
2171B	Yuu Koito and Minimum Absolute Sum math	900	x27337
2171A	Shizuku Hoshikawa and Farm Legs brute force, math	800	x37475
2170F	Build XOR on a Segment bitmasks, dp	2600	x792
2170E	Binary Strings and Blocks combinatorics, data structures, dp	2100	x2349
2170D	Almost Roman constructive algorithms, greedy, implementation	2200	x1700

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