Problemset - Codeforces

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Codeforces Round (Div. 2)
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Problems

#	Name
2273C	Matrix Puzzle brute force, data structures, implementation, math, matrices		x576
2257F2	Beaver's Jumping Track (Hard Version) data structures, dp, matrices	2700	x438
2257F1	Beaver's Jumping Track (Easy Version) data structures, dp, matrices	2500	x735
2208D1	Tree Orientation (Easy Version) constructive algorithms, dfs and similar, dsu, graphs, greedy, matrices, trees	1800	x5049
2204G	Grid Path dp, dp, graphs, matrices	2700	x630
2181K	Knit the Grid 2-sat, constructive algorithms, graphs, matrices	3500	x97
2180F2	Control Car (Hard Version) combinatorics, dp, matrices, probabilities	3200	x256
2152G	Query Jungle data structures, implementation, math, matrices, trees	2900	x4085
2145F	Long Journey dfs and similar, divide and conquer, dp, graphs, greedy, math, matrices, number theory	2500	x1110
2138E2	Determinant Construction (Hard Version) brute force, constructive algorithms, math, matrices, number theory	3100	x227
2138E1	Determinant Construction (Easy Version) brute force, constructive algorithms, math, matrices, number theory	3100	x282
2097D	Homework bitmasks, math, matrices	2800	x573
2081C	Quaternary Matrix bitmasks, constructive algorithms, greedy, implementation, matrices	2700	x391
2077C	Binary Subsequence Value Sum combinatorics, data structures, dp, fft, math, matrices	2300	x2476
2069B	Set of Strangers greedy, matrices	1200	x19366
2065H	Bro Thinks He's Him combinatorics, data structures, divide and conquer, dp, math, matrices	2200	x2083
2057D	Gifts Order data structures, greedy, implementation, math, matrices	2000	x5626
2042F	Two Subarrays data structures, dp, implementation, matrices	2600	x961
2036D	I Love 1543 brute force, implementation, matrices	1300	x16463
2023F	Hills and Pits data structures, greedy, math, matrices	3500	x139
2018D	Max Plus Min Plus Size data structures, dp, dsu, greedy, implementation, matrices, sortings	2200	x2287
2004G	Substring Compression data structures, dp, matrices	3200	x439
1995E2	Let Me Teach You a Lesson (Hard Version) data structures, dp, matrices, two pointers	2900	x424
1995E1	Let Me Teach You a Lesson (Easy Version) 2-sat, data structures, dp, matrices, two pointers	2700	x544
1980E	Permutation of Rows and Columns constructive algorithms, data structures, greedy, hashing, implementation, math, matrices, sortings	1600	x13492
1970E3	Trails (Hard) dp, matrices	2200	x1274
1970E2	Trails (Medium) dp, matrices	2000	x2227
1924C	Fractal Origami geometry, math, matrices	2400	x1421
1919F2	Wine Factory (Hard Version) data structures, dp, flows, greedy, matrices	2800	x1270
1916H2	Matrix Rank (Hard Version) combinatorics, dp, math, matrices, string suffix structures	2700	x690
1916H1	Matrix Rank (Easy Version) brute force, combinatorics, dp, math, matrices	2700	x757
1895F	Fancy Arrays combinatorics, dp, math, matrices	2600	x1137
1864H	Asterism Stream dp, math, matrices	3200	x640
1844G	Tree Weights bitmasks, constructive algorithms, data structures, dfs and similar, implementation, math, matrices, number theory, trees	3000	x1330
1814E	Chain Chips data structures, dp, matrices	2300	x1882
1808E2	Minibuses on Venus (medium version) combinatorics, divide and conquer, dp, matrices	2500	x905
1761E	Make It Connected binary search, brute force, constructive algorithms, dsu, graphs, greedy, matrices, trees, two pointers	2400	x2238
1743F	Intersection and Union data structures, dp, matrices, probabilities	2300	x1918
1713E	Cross Swapping 2-sat, data structures, dsu, greedy, matrices	2400	x2084
1701F	Points combinatorics, data structures, implementation, math, matrices	2500	x1240
1699B	Almost Ternary Matrix bitmasks, constructive algorithms, matrices	900	x22117
1698G	Long Binary String bitmasks, math, matrices, meet-in-the-middle, number theory	2900	x399
1681E	Labyrinth Adventures data structures, dp, matrices, shortest paths	2600	x1028
1672G	Cross Xor constructive algorithms, graphs, math, matrices	3200	x708
1662C	European Trip dp, graphs, math, matrices		x402
1648A	Weird Sum combinatorics, data structures, geometry, math, matrices, sortings	1400	x20620
1635D	Infinite Set bitmasks, dp, math, matrices, number theory, strings	1800	x7190
1616F	Tricolor Triangles brute force, graphs, math, matrices	2900	x790
1609E	William The Oblivious bitmasks, data structures, dp, matrices	2400	x2570
1599E	Two Arrays data structures, matrices	3200	x99
1557C	Moamen and XOR bitmasks, combinatorics, dp, math, matrices	1700	x11148
1540E	Tasty Dishes math, matrices	3500	x138
1538E	Funny Substrings data structures, hashing, implementation, matrices, strings	2100	x3311
1513C	Add One dp, matrices	1600	x17213
1511F	Chainword brute force, data structures, dp, matrices, string suffix structures, strings	2700	x674
1474F	1 2 3 4 ... dp, math, matrices	3000	x405
1458C	Latin Square math, matrices	2700	x1814
1427E	Xum bitmasks, constructive algorithms, math, matrices, number theory	2500	x1758
1411G	No Game No Life bitmasks, games, math, matrices	2700	x966
1402C	Star Trek *special problem, combinatorics, dfs and similar, dp, games, graphs, matrices, trees	2600	x273
1380F	Strange Addition data structures, dp, matrices	2600	x962
1375I	Cubic Lattice geometry, math, matrices, number theory	3500	x284
1344F	Piet's Palette matrices	3200	x630
1335F	Robots on a Grid data structures, dfs and similar, dsu, graphs, greedy, matrices	2200	x2477
1332E	Height All the Same combinatorics, constructive algorithms, math, matrices	2100	x4448
1286D	LCC data structures, math, matrices, probabilities	3100	x931
1266H	Red-Blue Graph dp, graphs, math, matrices, meet-in-the-middle	3400	x145
1252K	Addition Robot data structures, math, matrices	2100	x2142
1197F	Coloring Game dp, games, matrices	2700	x385
1188B	Count Pairs math, matrices, number theory, two pointers	2300	x5463
1184D2	Parallel Universes (Hard) math, matrices	3100	x170
1182E	Product Oriented Recurrence dp, math, matrices, number theory	2300	x3530
1152F2	Neko Rules the Catniverse (Large Version) bitmasks, dp, matrices	3000	x1174
1152F1	Neko Rules the Catniverse (Small Version) bitmasks, dp, matrices	2800	x919
1151F	Sonya and Informatics combinatorics, dp, matrices, probabilities	2300	x1716
1117D	Magic Gems dp, math, matrices	2100	x5795
1106F	Lunar New Year and a Recursive Sequence math, matrices, number theory	2400	x1262
1101G	(Zero XOR Subset)-less math, matrices	2300	x2356
1025E	Colored Cubes constructive algorithms, implementation, matrices	2700	x630
1023E	Down or Right constructive algorithms, interactive, matrices	2100	x2285
1012B	Chemical table constructive algorithms, dfs and similar, dsu, graphs, matrices	1900	x4483
989E	A Trance of Nightfall dp, geometry, matrices, probabilities	2700	x355
959F	Mahmoud and Ehab and yet another xor task bitmasks, dp, math, matrices	2400	x3070
954F	Runner's Problem dp, matrices, sortings	2100	x1452
946F	Fibonacci String Subsequences combinatorics, dp, matrices	2400	x682
923E	Perpetual Subtraction fft, math, matrices	3100	x647
917D	Stranger Trees dp, math, matrices, trees	2600	x1547
917C	Pollywog combinatorics, dp, matrices	2900	x490
891E	Lust combinatorics, math, matrices	3000	x1293
865G	Flowers and Chocolate combinatorics, math, matrices	3300	x340
852B	Neural Network country dp, matrices	2000	x1827
837F	Prefix Sums binary search, brute force, combinatorics, math, matrices	2400	x1106
832E	Vasya and Shifts matrices	2600	x415
821E	Okabe and El Psy Kongroo dp, matrices	2100	x1722
780F	Axel and Marston in Bitland bitmasks, dp, graphs, matrices	2400	x1318
750E	New Year and Old Subsequence data structures, divide and conquer, dp, matrices	2600	x1999
736D	Permutations math, matrices	2800	x623
718C	Sasha and Array data structures, math, matrices	2300	x5135
717D	Dexterina’s Lab games, matrices, probabilities	1900	x1661
696D	Legen... data structures, dp, matrices, strings	2500	x1736

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