Problemset - Codeforces

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Codeforces Round (Div. 2)
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Problems

#	Name
2194C	Secret message bitmasks, brute force, dp, math, number theory	1300	x12049
2194B	Offshores greedy, implementation, math	1000	x20613
2194A	Lawn Mower greedy, math	800	x25614
2193E	Product Queries dp, math, number theory, shortest paths	1300	x16774
2193A	DBMB and the Array brute force, math	800	x45417
2192F	Fish Fight dp, dp, math, probabilities, probabilities	2900	x210
2192C	All-in-one Gun binary search, greedy, math	1300	x12712
2189E	Majority Wins? constructive algorithms, greedy, math, strings	2600	x932
2189D2	Little String (Hard Version) combinatorics, dp, greedy, math, number theory	2200	x2137
2189D1	Little String (Easy Version) combinatorics, dp, greedy, math, number theory	1900	x4376
2189C2	XOR-convenience (Hard Version) bitmasks, constructive algorithms, math	1800	x6694
2189C1	XOR Convenience (Easy Version) bitmasks, constructive algorithms, math	1300	x15141
2189B	The Curse of the Frog constructive algorithms, greedy, math	1200	x16699
2187D	Cool Problem bitmasks, dp, math	2600	x740
2185G	Mixing MEXes data structures, implementation, math	1800	x3867
2185D	OutOfMemoryError data structures, implementation, math, two pointers	1100	x22699
2185A	Perfect Root constructive algorithms, math	800	x47760
2184D	Unfair Game combinatorics, dp, math	1600	x10689
2184C	Huge Pile binary search, dfs and similar, dp, graphs, math	1100	x23809
2184B	Hourglass math	1100	x26027
2184A	Social Experiment math	800	x40972
2183E	LCM is Legendary Counting Master dp, math, number theory	2100	x3101
2183C	War Strategy binary search, greedy, math, two pointers	1500	x11532
2182F2	Christmas Reindeer (hard version) bitmasks, brute force, combinatorics, data structures, greedy, math	2500	x1194
2182F1	Christmas Reindeer (easy version) bitmasks, brute force, combinatorics, dp, math	2300	x1383
2182D	Christmas Tree Decoration combinatorics, dp, greedy, math	1600	x9780
2181L	LLM Training math, string suffix structures	2800	x159
2181J	Jinx or Jackpot brute force, dp, math, probabilities	2300	x853
2181H	Honey Cake brute force, math, number theory	1200	x7868
2181G	Greta's Game binary search, dp, graphs, greedy, math	2400	x726
2181C	Cacti Classification binary search, constructive algorithms, interactive, math	3200	x180
2181A	Alphabet City binary search, math, strings	1300	x4223
2180G	Balance bitmasks, combinatorics, implementation, math	3500	x161
2180E	No Effect XOR bitmasks, divide and conquer, dp, greedy, math	2300	x1846
2180D	Insolvable Disks data structures, dp, greedy, math	2000	x4483
2179H	Blackslex and Plants bitmasks, data structures, dp, implementation, math	2200	x1410
2179G	Blackslex and Penguin Migration brute force, interactive, math	2200	x1340
2179E	Blackslex and Girls constructive algorithms, geometry, math	1800	x6218
2179D	Blackslex and Penguin Civilization bitmasks, constructive algorithms, greedy, math	1300	x14513
2179C	Blackslex and Number Theory implementation, math, number theory, sortings	1100	x23743
2179A	Blackslex and Password math, strings	800	x36122
2178F	Conquer or of Forest combinatorics, math, trees	2200	x1911
2178D	Xmas or Hysteria constructive algorithms, greedy, implementation, math	1700	x7140
2176F	Omega Numbers bitmasks, combinatorics, dp, math, number theory	2400	x1622
2176A	Operations with Inversions greedy, implementation, math	800	x30351
2175B	XOR Array constructive algorithms, math	1300	x13463
2174F	Mosaic Tree combinatorics, dp, fft, math, trees	2800	x525
2174E2	Game of Scientists (Version 2) binary search, chinese remainder theorem, dfs and similar, interactive, math	3200	x121
2174E1	Game of Scientists (Version 1) chinese remainder theorem, constructive algorithms, interactive, math	3100	x168
2174C2	Beautiful Patterns (Hard Version) combinatorics, math, probabilities	2500	x1153
2174C1	Beautiful Patterns (Easy Version) combinatorics, math, probabilities	2400	x1299
2173F	Isla's Memory Thresholds binary search, brute force, data structures, divide and conquer, math	2600	x660
2173D	Taiga's Carry Chains bitmasks, brute force, dp, greedy, math	1900	x3983
2173B	Niko's Tactical Cards dp, greedy, math	1100	x19259
2172F	Cluster Computing System graphs, greedy, math	1600	x4557
2171G	Sakura Adachi and Optimal Sequences bitmasks, combinatorics, greedy, math	2000	x2575
2171B	Yuu Koito and Minimum Absolute Sum math	900	x28870
2171A	Shizuku Hoshikawa and Farm Legs brute force, math	800	x39129
2170B	Addition on a Segment greedy, math	1200	x15792
2170A	Maximum Neighborhood bitmasks, brute force, greedy, implementation, math	800	x20978
2169F	Subsequence Problem combinatorics, dp, fft, math	2800	x366
2169D2	Removal of a Sequence (Hard Version) binary search, divide and conquer, greedy, implementation, math, number theory	2100	x2437
2169D1	Removal of a Sequence (Easy Version) binary search, implementation, math, number theory	1500	x9258
2169C	Range Operation dp, greedy, math, two pointers	1300	x13817
2168A2	Encode and Decode (Hard Version) bitmasks, communication, interactive, math		x3650
2167F	Tree, TREE!!! dfs and similar, dp, math, trees	1600	x7969
2167D	Yet Another Array Problem brute force, implementation, math, number theory	1000	x32568
2167A	Square? math, sortings	800	x64306
2166B	Tab Closing math	900	x19625
2165C	Binary Wine bitmasks, greedy, math	2000	x6288
2165B	Marble Council dp, math, sortings	1900	x6876
2164F2	Chain Prefix Rank (Hard Version) binary search, combinatorics, data structures, dfs and similar, dp, graphs, math, trees	2900	x944
2164F1	Chain Prefix Rank (Easy Version) combinatorics, dfs and similar, dp, math, trees	2600	x1954
2164B	Even Modulo Pair brute force, math, number theory	1000	x21497
2163D2	Diadrash (Hard Version) binary search, interactive, math, sortings	2500	x1625
2163C	Monopati brute force, combinatorics, dp, math, two pointers	1500	x9891
2163B	Siga ta Kymata constructive algorithms, greedy, implementation, math	1700	x9748
2163A	Souvlaki VS. Kalamaki brute force, greedy, math, sortings	800	x20511
2162G	Beautiful Tree constructive algorithms, math, probabilities, trees	2200	x2983
2161E	Left is Always Right combinatorics, implementation, math	2400	x835
2161A	Round Trip games, greedy, implementation, math	800	x16263
2160B	Distinct Elements greedy, math	1100	x18774
2160A	MEX Partition math	800	x23255
2159E	Super-Short-Polynomial-San math, meet-in-the-middle	3500	x2378
2159D2	Inverse Minimum Partition (Hard Version) dp, greedy, math	3200	x542
2159D1	Inverse Minimum Partition (Easy Version) binary search, brute force, dp, geometry, greedy, math, two pointers	2500	x2433
2159C	Twin Polynomials combinatorics, graph matchings, math	2300	x3563
2158F2	Distinct GCDs (Hard Version) combinatorics, constructive algorithms, graphs, math, number theory, number theory	3000	x327
2158F1	Distinct GCDs (Easy Version) constructive algorithms, graphs, math, number theory	2600	x491
2158B	Split constructive algorithms, greedy, math	1200	x15184
2158A	Suspension constructive algorithms, greedy, math	800	x24676
2157H	Keygen 3 brute force, combinatorics, constructive algorithms, dfs and similar, math	3300	x571
2157G	Isaac's Queries bitmasks, brute force, constructive algorithms, dfs and similar, divide and conquer, dp, greedy, interactive, math, probabilities	2800	x996
2157F	Git Gud brute force, constructive algorithms, divide and conquer, math, ternary search	2400	x1902
2157D	Billion Players Game binary search, greedy, math, sortings, ternary search, two pointers	1600	x8500
2157C	Meximum Array 2 constructive algorithms, greedy, implementation, math	1400	x12071
2157B	Expansion Plan 2 implementation, math	900	x15693
2156C	Maximum GCD on Whiteboard greedy, math, number theory	1400	x13182
2155E	Mimo & Yuyu games, greedy, math	2200	x3163
2155D	Batteries brute force, constructive algorithms, graph matchings, graphs, interactive, math	1800	x6365

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