Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
20:26:13
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Codeforces Round 941 (Div. 2)
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matrices

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Problems

#	Name
166E	Tetrahedron dp, math, matrices	1500	x19886
1699B	Almost Ternary Matrix bitmasks, constructive algorithms, matrices	900	x19137
1513C	Add One dp, matrices	1600	x13161
1648A	Weird Sum combinatorics, data structures, geometry, math, matrices, sortings	1400	x11690
225C	Barcode dp, matrices	1700	x8732
1557C	Moamen and XOR bitmasks, combinatorics, dp, math, matrices	1700	x8311
485A	Factory implementation, math, matrices	1400	x8085
1635D	Infinite Set bitmasks, dp, math, matrices, number theory, strings	1800	x5988
337C	Quiz binary search, greedy, math, matrices, number theory	1600	x4765
1188B	Count Pairs math, matrices, number theory, two pointers	2300	x4207
1117D	Magic Gems dp, math, matrices	2100	x4000
1012B	Chemical table constructive algorithms, dfs and similar, dsu, graphs, matrices	1900	x3646
1332E	Height All the Same combinatorics, constructive algorithms, math, matrices	2100	x3551
718C	Sasha and Array data structures, math, matrices	2300	x3360
582B	Once Again... constructive algorithms, dp, matrices	1900	x3302
1538E	Funny Substrings data structures, hashing, implementation, matrices, strings	2100	x2798
621E	Wet Shark and Blocks dp, matrices	2000	x2714
222E	Decoding Genome dp, matrices	1900	x2522
1182E	Product Oriented Recurrence dp, math, matrices, number theory	2300	x2521
691E	Xor-sequences matrices	1900	x2353
696C	PLEASE combinatorics, dp, implementation, math, matrices	2000	x2046
1335F	Robots on a Grid data structures, dfs and similar, dsu, graphs, greedy, matrices	2200	x1960
1023E	Down or Right constructive algorithms, interactive, matrices	2100	x1950
959F	Mahmoud and Ehab and yet another xor task bitmasks, dp, math, matrices	2400	x1937
1609E	William The Oblivious bitmasks, data structures, dp, matrices	2400	x1835
1252K	Addition Robot data structures, math, matrices	2100	x1780
551D	GukiZ and Binary Operations combinatorics, implementation, math, matrices, number theory	2100	x1722
1761E	Make It Connected binary search, brute force, constructive algorithms, dsu, graphs, greedy, matrices, trees, two pointers	2400	x1719
1101G	(Zero XOR Subset)-less math, matrices	2300	x1603
348D	Turtles dp, matrices	2500	x1557
1713E	Cross Swapping 2-sat, data structures, dsu, greedy, matrices	2400	x1508
750E	New Year and Old Subsequence data structures, divide and conquer, dp, matrices	2600	x1464
821E	Okabe and El Psy Kongroo dp, matrices	2100	x1410
1743F	Intersection and Union data structures, dp, matrices, probabilities	2300	x1407
852B	Neural Network country dp, matrices	2000	x1369
514E	Darth Vader and Tree dp, matrices	2200	x1363
717D	Dexterina’s Lab games, matrices, probabilities	1900	x1356
576D	Flights for Regular Customers dp, matrices	2700	x1306
1427E	Xum bitmasks, constructive algorithms, math, matrices, number theory	2500	x1258
1814E	Chain Chips data structures, dp, matrices	2300	x1232
696D	Legen... data structures, dp, matrices, strings	2500	x1217
1458C	Latin Square math, matrices	2700	x1197
1151F	Sonya and Informatics combinatorics, dp, matrices, probabilities	2300	x1139
1924C	Fractal Origami geometry, math, matrices	2400	x1027
632F	Magic Matrix brute force, divide and conquer, graphs, matrices, trees	2400	x1019
780F	Axel and Marston in Bitland bitmasks, dp, graphs, matrices	2400	x1018
917D	Stranger Trees dp, math, matrices, trees	2600	x999
954F	Runner's Problem dp, matrices, sortings	2100	x975
1106F	Lunar New Year and a Recursive Sequence math, matrices, number theory	2400	x945
1701F	Points combinatorics, data structures, implementation, math, matrices	2500	x880
226C	Anniversary data structures, implementation, math, matrices, number theory	2400	x842
891E	Lust combinatorics, math, matrices	3000	x841
575A	Fibonotci data structures, math, matrices	2700	x756
1380F	Strange Addition data structures, dp, matrices	2600	x753
147B	Smile House binary search, graphs, matrices	2500	x741
837F	Prefix Sums binary search, brute force, combinatorics, math, matrices	2400	x734
1919F2	Wine Factory (Hard Version) data structures, dp, flows, greedy, matrices	2800	x730
1681E	Labyrinth Adventures data structures, dp, matrices, shortest paths	2600	x698
506E	Mr. Kitayuta's Gift combinatorics, dp, matrices, strings	3000	x683
113D	Museum math, matrices, probabilities	2700	x648
1808E2	Minibuses on Venus (medium version) combinatorics, divide and conquer, dp, matrices	2500	x642
1844G	Tree Weights bitmasks, constructive algorithms, data structures, dfs and similar, implementation, math, matrices, number theory, trees	3000	x637
1895F	Fancy Arrays combinatorics, dp, math, matrices	2600	x622
1152F2	Neko Rules the Catniverse (Large Version) bitmasks, dp, matrices	3000	x591
1616F	Tricolor Triangles brute force, graphs, math, matrices	2900	x582
1916H1	Matrix Rank (Easy Version) brute force, combinatorics, dp, math, matrices	2700	x581
1411G	No Game No Life bitmasks, games, math, matrices	2700	x578
392C	Yet Another Number Sequence combinatorics, math, matrices		x574
1286D	LCC data structures, math, matrices, probabilities	3100	x555
385E	Bear in the Field math, matrices	2300	x554
1025E	Colored Cubes constructive algorithms, implementation, matrices	2700	x547
167E	Wizards and Bets dfs and similar, graphs, math, matrices	2900	x544
351C	Jeff and Brackets dp, matrices	2500	x538
578F	Mirror Box matrices, trees	3200	x529
946F	Fibonacci String Subsequences combinatorics, dp, matrices	2400	x528
1152F1	Neko Rules the Catniverse (Small Version) bitmasks, dp, matrices	2800	x512
1916H2	Matrix Rank (Hard Version) combinatorics, dp, math, matrices, string suffix structures	2700	x499
193C	Hamming Distance constructive algorithms, greedy, math, matrices	2400	x494
453D	Little Pony and Elements of Harmony dp, matrices	3000	x459
736D	Permutations math, matrices	2800	x450
498E	Stairs and Lines dp, matrices	2700	x448
923E	Perpetual Subtraction fft, math, matrices	3100	x435
662A	Gambling Nim bitmasks, math, matrices, probabilities	2400	x429
1511F	Chainword brute force, data structures, dp, matrices, string suffix structures, strings	2700	x417
107D	Crime Management dp, graphs, matrices	2400	x400
593E	Strange Calculation and Cats dp, matrices	2400	x399
446D	DZY Loves Games math, matrices, probabilities	2800	x378
917C	Pollywog combinatorics, dp, matrices	2900	x370
51E	Pentagon combinatorics, graphs, matrices	2400	x363
93D	Flags dp, math, matrices	2500	x333
193E	Fibonacci Number brute force, math, matrices	2900	x320
60E	Mushroom Gnomes math, matrices	2600	x316
1672G	Cross Xor constructive algorithms, graphs, math, matrices	3200	x313
1698G	Long Binary String bitmasks, math, matrices, meet-in-the-middle, number theory	2900	x300
1662C	European Trip dp, graphs, math, matrices		x288
497E	Subsequences Return dp, matrices	2900	x281
832E	Vasya and Shifts matrices	2600	x277
1864H	Asterism Stream dp, math, matrices	3200	x267
1344F	Piet's Palette matrices	3200	x252
472F	Design Tutorial: Change the Goal constructive algorithms, math, matrices	2700	x248

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