Problemset - Codeforces

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Codeforces Round 875 (Div. 1)
10:21:23
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Before contest
Codeforces Round 875 (Div. 2)
10:21:23
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matrices

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Problems

#	Name
1375I	Cubic Lattice geometry, math, matrices, number theory	3500	x69
1540E	Tasty Dishes math, matrices	3500	x74
1266H	Red-Blue Graph dp, graphs, math, matrices, meet-in-the-middle	3400	x88
865G	Flowers and Chocolate combinatorics, math, matrices	3300	x120
618G	Combining Slimes dp, math, matrices, probabilities	3300	x198
1599E	Two Arrays data structures, matrices	3200	x47
1344F	Piet's Palette matrices	3200	x191
1672G	Cross Xor constructive algorithms, graphs, math, matrices	3200	x233
578F	Mirror Box matrices, trees	3200	x401
1184D2	Parallel Universes (Hard) math, matrices	3100	x52
446E	DZY Loves Bridges math, matrices	3100	x102
923E	Perpetual Subtraction fft, math, matrices	3100	x387
1286D	LCC data structures, math, matrices, probabilities	3100	x475
1474F	1 2 3 4 ... dp, math, matrices	3000	x166
1152F2	Neko Rules the Catniverse (Large Version) bitmasks, dp, matrices	3000	x408
453D	Little Pony and Elements of Harmony dp, matrices	3000	x418
506E	Mr. Kitayuta's Gift combinatorics, dp, matrices, strings	3000	x579
891E	Lust combinatorics, math, matrices	3000	x725
497E	Subsequences Return dp, matrices	2900	x249
1698G	Long Binary String bitmasks, math, matrices, meet-in-the-middle, number theory	2900	x252
193E	Fibonacci Number brute force, math, matrices	2900	x293
917C	Pollywog combinatorics, dp, matrices	2900	x310
167E	Wizards and Bets dfs and similar, graphs, math, matrices	2900	x458
1616F	Tricolor Triangles brute force, graphs, math, matrices	2900	x500
446D	DZY Loves Games math, matrices, probabilities	2800	x298
1152F1	Neko Rules the Catniverse (Small Version) bitmasks, dp, matrices	2800	x371
736D	Permutations math, matrices	2800	x392
267C	Berland Traffic math, matrices	2700	x139
86E	Long sequence brute force, math, matrices	2700	x163
1197F	Coloring Game dp, games, matrices	2700	x204
989E	A Trance of Nightfall dp, geometry, matrices, probabilities	2700	x217
472F	Design Tutorial: Change the Goal constructive algorithms, math, matrices	2700	x239
1511F	Chainword brute force, data structures, dp, matrices, string suffix structures, strings	2700	x323
498E	Stairs and Lines dp, matrices	2700	x380
1025E	Colored Cubes constructive algorithms, implementation, matrices	2700	x497
1411G	No Game No Life bitmasks, games, math, matrices	2700	x504
113D	Museum math, matrices, probabilities	2700	x564
575A	Fibonotci data structures, math, matrices	2700	x596
1458C	Latin Square math, matrices	2700	x1048
576D	Flights for Regular Customers dp, matrices	2700	x1094
177G2	Fibonacci Strings matrices, strings	2600	x130
1402C	Star Trek *special problem, combinatorics, dfs and similar, dp, games, graphs, matrices, trees	2600	x180
832E	Vasya and Shifts matrices	2600	x248
60E	Mushroom Gnomes math, matrices	2600	x282
1681E	Labyrinth Adventures data structures, dp, matrices, shortest paths	2600	x569
1380F	Strange Addition data structures, dp, matrices	2600	x660
917D	Stranger Trees dp, math, matrices, trees	2600	x802
750E	New Year and Old Subsequence data structures, divide and conquer, dp, matrices	2600	x1327
93D	Flags dp, math, matrices	2500	x298
1808E2	Minibuses on Venus (medium version) combinatorics, divide and conquer, dp, matrices	2500	x432
351C	Jeff and Brackets dp, matrices	2500	x509
147B	Smile House binary search, graphs, matrices	2500	x680
1701F	Points combinatorics, data structures, implementation, math, matrices	2500	x762
696D	Legen... data structures, dp, matrices, strings	2500	x1054
1427E	Xum bitmasks, constructive algorithms, math, matrices, number theory	2500	x1150
348D	Turtles dp, matrices	2500	x1289
51E	Pentagon combinatorics, graphs, matrices	2400	x325
662A	Gambling Nim bitmasks, math, matrices, probabilities	2400	x353
593E	Strange Calculation and Cats dp, matrices	2400	x371
107D	Crime Management dp, graphs, matrices	2400	x371
193C	Hamming Distance constructive algorithms, greedy, math, matrices	2400	x466
946F	Fibonacci String Subsequences combinatorics, dp, matrices	2400	x481
837F	Prefix Sums binary search, brute force, combinatorics, math, matrices	2400	x657
226C	Anniversary data structures, implementation, math, matrices, number theory	2400	x737
632F	Magic Matrix brute force, divide and conquer, graphs, matrices, trees	2400	x802
1106F	Lunar New Year and a Recursive Sequence math, matrices, number theory	2400	x831
780F	Axel and Marston in Bitland bitmasks, dp, graphs, matrices	2400	x942
1713E	Cross Swapping 2-sat, data structures, dsu, greedy, matrices	2400	x1342
1761E	Make It Connected binary search, brute force, constructive algorithms, dsu, graphs, greedy, matrices, trees, two pointers	2400	x1416
959F	Mahmoud and Ehab and yet another xor task bitmasks, dp, math, matrices	2400	x1548
1609E	William The Oblivious bitmasks, data structures, dp, matrices	2400	x1621
385E	Bear in the Field math, matrices	2300	x528
1814E	Chain Chips data structures, dp, matrices	2300	x874
1151F	Sonya and Informatics combinatorics, dp, matrices, probabilities	2300	x996
1743F	Intersection and Union data structures, dp, matrices, probabilities	2300	x1223
1101G	(Zero XOR Subset)-less math, matrices	2300	x1390
1182E	Product Oriented Recurrence dp, math, matrices, number theory	2300	x2279
718C	Sasha and Array data structures, math, matrices	2300	x2742
1188B	Count Pairs math, matrices, number theory, two pointers	2300	x3790
514E	Darth Vader and Tree dp, matrices	2200	x1215
1335F	Robots on a Grid data structures, dfs and similar, dsu, graphs, greedy, matrices	2200	x1845
954F	Runner's Problem dp, matrices, sortings	2100	x886
821E	Okabe and El Psy Kongroo dp, matrices	2100	x1311
1252K	Addition Robot data structures, math, matrices	2100	x1610
551D	GukiZ and Binary Operations combinatorics, implementation, math, matrices, number theory	2100	x1615
1023E	Down or Right constructive algorithms, interactive, matrices	2100	x1843
1538E	Funny Substrings data structures, hashing, implementation, matrices, strings	2100	x2570
1332E	Height All the Same combinatorics, constructive algorithms, math, matrices	2100	x3259
1117D	Magic Gems dp, math, matrices	2100	x3479
852B	Neural Network country dp, matrices	2000	x1178
696C	PLEASE combinatorics, dp, implementation, math, matrices	2000	x1950
621E	Wet Shark and Blocks dp, matrices	2000	x2432
717D	Dexterina’s Lab games, matrices, probabilities	1900	x1268
691E	Xor-sequences matrices	1900	x2072
222E	Decoding Genome dp, matrices	1900	x2081
582B	Once Again... constructive algorithms, dp, matrices	1900	x3155
1012B	Chemical table constructive algorithms, dfs and similar, dsu, graphs, matrices	1900	x3416
1635D	Infinite Set bitmasks, dp, math, matrices, number theory, strings	1800	x5293
1557C	Moamen and XOR bitmasks, combinatorics, dp, math, matrices	1700	x7662
225C	Barcode dp, matrices	1700	x7984

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