Problemset - Codeforces

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Codeforces Round 945 (Div. 2)
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Problems

#	Name
1375I	Cubic Lattice geometry, math, matrices, number theory	3500	x76
1540E	Tasty Dishes math, matrices	3500	x99
1266H	Red-Blue Graph dp, graphs, math, matrices, meet-in-the-middle	3400	x99
865G	Flowers and Chocolate combinatorics, math, matrices	3300	x132
618G	Combining Slimes dp, math, matrices, probabilities	3300	x220
1599E	Two Arrays data structures, matrices	3200	x66
1344F	Piet's Palette matrices	3200	x256
1864H	Asterism Stream dp, math, matrices	3200	x270
1672G	Cross Xor constructive algorithms, graphs, math, matrices	3200	x313
578F	Mirror Box matrices, trees	3200	x534
1184D2	Parallel Universes (Hard) math, matrices	3100	x102
446E	DZY Loves Bridges math, matrices	3100	x118
923E	Perpetual Subtraction fft, math, matrices	3100	x435
1286D	LCC data structures, math, matrices, probabilities	3100	x557
1474F	1 2 3 4 ... dp, math, matrices	3000	x241
453D	Little Pony and Elements of Harmony dp, matrices	3000	x459
1152F2	Neko Rules the Catniverse (Large Version) bitmasks, dp, matrices	3000	x597
1844G	Tree Weights bitmasks, constructive algorithms, data structures, dfs and similar, implementation, math, matrices, number theory, trees	3000	x644
506E	Mr. Kitayuta's Gift combinatorics, dp, matrices, strings	3000	x685
891E	Lust combinatorics, math, matrices	3000	x860
497E	Subsequences Return dp, matrices	2900	x281
1698G	Long Binary String bitmasks, math, matrices, meet-in-the-middle, number theory	2900	x301
193E	Fibonacci Number brute force, math, matrices	2900	x322
917C	Pollywog combinatorics, dp, matrices	2900	x371
167E	Wizards and Bets dfs and similar, graphs, math, matrices	2900	x546
1616F	Tricolor Triangles brute force, graphs, math, matrices	2900	x584
446D	DZY Loves Games math, matrices, probabilities	2800	x379
736D	Permutations math, matrices	2800	x450
1152F1	Neko Rules the Catniverse (Small Version) bitmasks, dp, matrices	2800	x517
1919F2	Wine Factory (Hard Version) data structures, dp, flows, greedy, matrices	2800	x741
267C	Berland Traffic math, matrices	2700	x159
86E	Long sequence brute force, math, matrices	2700	x179
989E	A Trance of Nightfall dp, geometry, matrices, probabilities	2700	x228
1197F	Coloring Game dp, games, matrices	2700	x238
472F	Design Tutorial: Change the Goal constructive algorithms, math, matrices	2700	x249
1511F	Chainword brute force, data structures, dp, matrices, string suffix structures, strings	2700	x418
498E	Stairs and Lines dp, matrices	2700	x449
1916H2	Matrix Rank (Hard Version) combinatorics, dp, math, matrices, string suffix structures	2700	x502
1025E	Colored Cubes constructive algorithms, implementation, matrices	2700	x548
1411G	No Game No Life bitmasks, games, math, matrices	2700	x578
1916H1	Matrix Rank (Easy Version) brute force, combinatorics, dp, math, matrices	2700	x584
113D	Museum math, matrices, probabilities	2700	x652
575A	Fibonotci data structures, math, matrices	2700	x765
1458C	Latin Square math, matrices	2700	x1199
576D	Flights for Regular Customers dp, matrices	2700	x1306
177G2	Fibonacci Strings matrices, strings	2600	x171
1402C	Star Trek *special problem, combinatorics, dfs and similar, dp, games, graphs, matrices, trees	2600	x198
832E	Vasya and Shifts matrices	2600	x279
60E	Mushroom Gnomes math, matrices	2600	x316
1895F	Fancy Arrays combinatorics, dp, math, matrices	2600	x630
1681E	Labyrinth Adventures data structures, dp, matrices, shortest paths	2600	x698
1380F	Strange Addition data structures, dp, matrices	2600	x753
917D	Stranger Trees dp, math, matrices, trees	2600	x1010
750E	New Year and Old Subsequence data structures, divide and conquer, dp, matrices	2600	x1466
93D	Flags dp, math, matrices	2500	x334
351C	Jeff and Brackets dp, matrices	2500	x539
1808E2	Minibuses on Venus (medium version) combinatorics, divide and conquer, dp, matrices	2500	x648
147B	Smile House binary search, graphs, matrices	2500	x745
1701F	Points combinatorics, data structures, implementation, math, matrices	2500	x888
696D	Legen... data structures, dp, matrices, strings	2500	x1235
1427E	Xum bitmasks, constructive algorithms, math, matrices, number theory	2500	x1266
348D	Turtles dp, matrices	2500	x1570
51E	Pentagon combinatorics, graphs, matrices	2400	x365
593E	Strange Calculation and Cats dp, matrices	2400	x399
107D	Crime Management dp, graphs, matrices	2400	x400
662A	Gambling Nim bitmasks, math, matrices, probabilities	2400	x429
193C	Hamming Distance constructive algorithms, greedy, math, matrices	2400	x496
946F	Fibonacci String Subsequences combinatorics, dp, matrices	2400	x529
837F	Prefix Sums binary search, brute force, combinatorics, math, matrices	2400	x739
226C	Anniversary data structures, implementation, math, matrices, number theory	2400	x844
1106F	Lunar New Year and a Recursive Sequence math, matrices, number theory	2400	x949
780F	Axel and Marston in Bitland bitmasks, dp, graphs, matrices	2400	x1020
632F	Magic Matrix brute force, divide and conquer, graphs, matrices, trees	2400	x1025
1924C	Fractal Origami geometry, math, matrices	2400	x1046
1713E	Cross Swapping 2-sat, data structures, dsu, greedy, matrices	2400	x1517
1761E	Make It Connected binary search, brute force, constructive algorithms, dsu, graphs, greedy, matrices, trees, two pointers	2400	x1735
1609E	William The Oblivious bitmasks, data structures, dp, matrices	2400	x1846
959F	Mahmoud and Ehab and yet another xor task bitmasks, dp, math, matrices	2400	x1940
385E	Bear in the Field math, matrices	2300	x559
1151F	Sonya and Informatics combinatorics, dp, matrices, probabilities	2300	x1143
1814E	Chain Chips data structures, dp, matrices	2300	x1253
1743F	Intersection and Union data structures, dp, matrices, probabilities	2300	x1412
1101G	(Zero XOR Subset)-less math, matrices	2300	x1607
1182E	Product Oriented Recurrence dp, math, matrices, number theory	2300	x2526
718C	Sasha and Array data structures, math, matrices	2300	x3373
1188B	Count Pairs math, matrices, number theory, two pointers	2300	x4297
1970E3	Trails (Hard) dp, matrices	2200	x351
514E	Darth Vader and Tree dp, matrices	2200	x1366
1335F	Robots on a Grid data structures, dfs and similar, dsu, graphs, greedy, matrices	2200	x1989
954F	Runner's Problem dp, matrices, sortings	2100	x976
821E	Okabe and El Psy Kongroo dp, matrices	2100	x1415
551D	GukiZ and Binary Operations combinatorics, implementation, math, matrices, number theory	2100	x1723
1252K	Addition Robot data structures, math, matrices	2100	x1787
1023E	Down or Right constructive algorithms, interactive, matrices	2100	x1955
1538E	Funny Substrings data structures, hashing, implementation, matrices, strings	2100	x2806
1332E	Height All the Same combinatorics, constructive algorithms, math, matrices	2100	x3602
1117D	Magic Gems dp, math, matrices	2100	x4019
1970E2	Trails (Medium) dp, matrices	2000	x582
852B	Neural Network country dp, matrices	2000	x1376
696C	PLEASE combinatorics, dp, implementation, math, matrices	2000	x2051

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