Problemset - Codeforces

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Educational Codeforces Round 107 (Rated for Div. 2)
01:44:44
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matrices

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Problems

#	Name
1513C	Add One dp, matrices		x4196
1474F	1 2 3 4 ... dp, math, matrices	3000	x78
1411G	No Game No Life bitmasks, games, math, matrices	2700	x351
1458C	Latin Square math, matrices	2700	x636
1427E	Xum bitmasks, constructive algorithms, math, matrices, number theory	2500	x803
1402C	Star Trek *special problem, combinatorics, dfs and similar, dp, games, graphs, matrices, trees	2600	x131
1380F	Strange Addition data structures, dp, matrices	2600	x504
1375I	Cubic Lattice geometry, math, matrices, number theory	3500	x54
1344F	Piet's Palette matrices	3200	x114
1335F	Robots on a Grid data structures, dfs and similar, dsu, graphs, greedy, matrices	2200	x1526
1332E	Height All the Same combinatorics, constructive algorithms, math, matrices	2100	x2767
1286D	LCC data structures, math, matrices, probabilities	3100	x286
1266H	Red-Blue Graph dp, graphs, math, matrices, meet-in-the-middle	3400	x33
1252K	Addition Robot data structures, math, matrices	2100	x1306
1197F	Coloring Game dp, games, matrices	2700	x146
1184D2	Parallel Universes (Hard) math, matrices	3100	x21
1188B	Count Pairs math, matrices, number theory, two pointers	2300	x3019
1182E	Product Oriented Recurrence dp, math, matrices, number theory	2300	x1779
1152F2	Neko Rules the Catniverse (Large Version) bitmasks, dp, matrices	3000	x200
1152F1	Neko Rules the Catniverse (Small Version) bitmasks, dp, matrices	2800	x207
1151F	Sonya and Informatics combinatorics, dp, matrices, probabilities	2300	x694
1117D	Magic Gems dp, math, matrices	2100	x2591
1106F	Lunar New Year and a Recursive Sequence math, matrices, number theory	2400	x644
1101G	(Zero XOR Subset)-less math, matrices	2300	x891
1025E	Colored Cubes constructive algorithms, implementation, matrices	2700	x420
1023E	Down or Right constructive algorithms, interactive, matrices	2100	x1543
1012B	Chemical table constructive algorithms, dfs and similar, dsu, graphs, matrices	1900	x2843
989E	A Trance of Nightfall dp, geometry, matrices, probabilities	2700	x180
959F	Mahmoud and Ehab and yet another xor task bitmasks, dp, math, matrices	2400	x953
954F	Runner's Problem dp, matrices, sortings	2100	x669
923E	Perpetual Subtraction fft, math, matrices	3100	x251
946F	Fibonacci String Subsequences combinatorics, dp, matrices	2400	x340
917D	Stranger Trees dp, math, matrices, trees	2600	x490
917C	Pollywog combinatorics, dp, matrices	2900	x220
891E	Lust combinatorics, math, matrices	3000	x407
865G	Flowers and Chocolate combinatorics, math, matrices	3300	x92
852B	Neural Network country dp, matrices	2000	x843
837F	Prefix Sums binary search, brute force, combinatorics, math, matrices	2400	x502
832E	Vasya and Shifts matrices	2600	x192
821E	Okabe and El Psy Kongroo dp, matrices	2100	x1159
780F	Axel and Marston in Bitland bitmasks, dp, graphs, matrices	2400	x813
750E	New Year and Old Subsequence data structures, divide and conquer, dp, matrices	2600	x922
736D	Permutations math, matrices	2800	x308
718C	Sasha and Array data structures, math, matrices	2300	x1875
717D	Dexterina’s Lab games, matrices, probabilities	1900	x1058
696D	Legen... data structures, dp, matrices, strings	2500	x710
696C	PLEASE combinatorics, dp, implementation, math, matrices	2000	x1669
691E	Xor-sequences matrices	1900	x1455
662A	Gambling Nim bitmasks, math, matrices, probabilities	2400	x267
632F	Magic Matrix brute force, divide and conquer, graphs, matrices, trees	2400	x513
621E	Wet Shark and Blocks dp, matrices	2000	x1955
618G	Combining Slimes dp, math, matrices, probabilities	3300	x117
593E	Strange Calculation and Cats dp, matrices	2400	x315
582B	Once Again... constructive algorithms, dp, matrices	1900	x2751
578F	Mirror Box matrices, trees	3200	x265
576D	Flights for Regular Customers dp, matrices	2700	x774
575A	Fibonotci data structures, math, matrices	2700	x450
551D	GukiZ and Binary Operations combinatorics, implementation, math, matrices, number theory	2100	x1474
514E	Darth Vader and Tree dp, matrices	2200	x997
506E	Mr. Kitayuta's Gift combinatorics, dp, matrices, strings	3000	x356
498E	Stairs and Lines dp, matrices	2700	x303
497E	Subsequences Return dp, matrices	2900	x184
485A	Factory implementation, math, matrices	1400	x6323
472F	Design Tutorial: Change the Goal constructive algorithms, math, matrices	2700	x202
453D	Little Pony and Elements of Harmony dp, matrices	3000	x295
446E	DZY Loves Bridges math, matrices	3100	x78
446D	DZY Loves Games math, matrices, probabilities	2800	x226
392C	Yet Another Number Sequence combinatorics, math, matrices		x384
385E	Bear in the Field math, matrices	2300	x454
351C	Jeff and Brackets dp, matrices	2500	x434
348D	Turtles dp, matrices	2500	x741
337C	Quiz binary search, greedy, math, matrices, number theory	1600	x3992
267C	Berland Traffic math, matrices	2700	x115
226C	Anniversary data structures, implementation, math, matrices, number theory	2400	x630
225C	Barcode dp, matrices	1700	x6193
222E	Decoding Genome dp, matrices	1900	x1512
193E	Fibonacci Number brute force, math, matrices	2900	x226
193C	Hamming Distance constructive algorithms, greedy, math, matrices	2400	x398
177G2	Fibonacci Strings matrices, strings	2600	x102
167E	Wizards and Bets dfs and similar, graphs, math, matrices	2900	x284
166E	Tetrahedron dp, math, matrices	1500	x12715
147B	Smile House binary search, graphs, matrices	2500	x551
113D	Museum math, matrices, probabilities	2700	x402
107D	Crime Management dp, graphs, matrices	2400	x310
93D	Flags dp, math, matrices	2500	x261
86E	Long sequence brute force, math, matrices	2700	x148
60E	Mushroom Gnomes math, matrices	2600	x226
51E	Pentagon combinatorics, graphs, matrices	2400	x251