Problemset - Codeforces

→ Pay attention

Before contest
Codeforces Round 940 (Div. 2) and CodeCraft-23
39:25:31
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

matrices

Add tag

Problems

#	Name
1699B	Almost Ternary Matrix bitmasks, constructive algorithms, matrices	900	x19120
1648A	Weird Sum combinatorics, data structures, geometry, math, matrices, sortings	1400	x11659
485A	Factory implementation, math, matrices	1400	x8080
166E	Tetrahedron dp, math, matrices	1500	x19843
1513C	Add One dp, matrices	1600	x13118
337C	Quiz binary search, greedy, math, matrices, number theory	1600	x4761
225C	Barcode dp, matrices	1700	x8716
1557C	Moamen and XOR bitmasks, combinatorics, dp, math, matrices	1700	x8294
1635D	Infinite Set bitmasks, dp, math, matrices, number theory, strings	1800	x5973
1012B	Chemical table constructive algorithms, dfs and similar, dsu, graphs, matrices	1900	x3643
582B	Once Again... constructive algorithms, dp, matrices	1900	x3301
222E	Decoding Genome dp, matrices	1900	x2517
691E	Xor-sequences matrices	1900	x2352
717D	Dexterina’s Lab games, matrices, probabilities	1900	x1356
621E	Wet Shark and Blocks dp, matrices	2000	x2713
696C	PLEASE combinatorics, dp, implementation, math, matrices	2000	x2044
852B	Neural Network country dp, matrices	2000	x1366
1117D	Magic Gems dp, math, matrices	2100	x3997
1332E	Height All the Same combinatorics, constructive algorithms, math, matrices	2100	x3549
1538E	Funny Substrings data structures, hashing, implementation, matrices, strings	2100	x2795
1023E	Down or Right constructive algorithms, interactive, matrices	2100	x1948
1252K	Addition Robot data structures, math, matrices	2100	x1778
551D	GukiZ and Binary Operations combinatorics, implementation, math, matrices, number theory	2100	x1721
821E	Okabe and El Psy Kongroo dp, matrices	2100	x1407
954F	Runner's Problem dp, matrices, sortings	2100	x974
1335F	Robots on a Grid data structures, dfs and similar, dsu, graphs, greedy, matrices	2200	x1955
514E	Darth Vader and Tree dp, matrices	2200	x1355
1188B	Count Pairs math, matrices, number theory, two pointers	2300	x4198
718C	Sasha and Array data structures, math, matrices	2300	x3355
1182E	Product Oriented Recurrence dp, math, matrices, number theory	2300	x2516
1101G	(Zero XOR Subset)-less math, matrices	2300	x1597
1743F	Intersection and Union data structures, dp, matrices, probabilities	2300	x1405
1814E	Chain Chips data structures, dp, matrices	2300	x1223
1151F	Sonya and Informatics combinatorics, dp, matrices, probabilities	2300	x1135
385E	Bear in the Field math, matrices	2300	x553
959F	Mahmoud and Ehab and yet another xor task bitmasks, dp, math, matrices	2400	x1931
1609E	William The Oblivious bitmasks, data structures, dp, matrices	2400	x1831
1761E	Make It Connected binary search, brute force, constructive algorithms, dsu, graphs, greedy, matrices, trees, two pointers	2400	x1715
1713E	Cross Swapping 2-sat, data structures, dsu, greedy, matrices	2400	x1505
1924C	Fractal Origami geometry, math, matrices	2400	x1021
780F	Axel and Marston in Bitland bitmasks, dp, graphs, matrices	2400	x1017
632F	Magic Matrix brute force, divide and conquer, graphs, matrices, trees	2400	x1011
1106F	Lunar New Year and a Recursive Sequence math, matrices, number theory	2400	x941
226C	Anniversary data structures, implementation, math, matrices, number theory	2400	x840
837F	Prefix Sums binary search, brute force, combinatorics, math, matrices	2400	x732
946F	Fibonacci String Subsequences combinatorics, dp, matrices	2400	x527
193C	Hamming Distance constructive algorithms, greedy, math, matrices	2400	x493
662A	Gambling Nim bitmasks, math, matrices, probabilities	2400	x428
107D	Crime Management dp, graphs, matrices	2400	x398
593E	Strange Calculation and Cats dp, matrices	2400	x397
51E	Pentagon combinatorics, graphs, matrices	2400	x362
348D	Turtles dp, matrices	2500	x1554
1427E	Xum bitmasks, constructive algorithms, math, matrices, number theory	2500	x1256
696D	Legen... data structures, dp, matrices, strings	2500	x1212
1701F	Points combinatorics, data structures, implementation, math, matrices	2500	x879
147B	Smile House binary search, graphs, matrices	2500	x740
1808E2	Minibuses on Venus (medium version) combinatorics, divide and conquer, dp, matrices	2500	x640
351C	Jeff and Brackets dp, matrices	2500	x536
93D	Flags dp, math, matrices	2500	x331
750E	New Year and Old Subsequence data structures, divide and conquer, dp, matrices	2600	x1462
917D	Stranger Trees dp, math, matrices, trees	2600	x996
1380F	Strange Addition data structures, dp, matrices	2600	x752
1681E	Labyrinth Adventures data structures, dp, matrices, shortest paths	2600	x696
1895F	Fancy Arrays combinatorics, dp, math, matrices	2600	x615
60E	Mushroom Gnomes math, matrices	2600	x314
832E	Vasya and Shifts matrices	2600	x276
1402C	Star Trek *special problem, combinatorics, dfs and similar, dp, games, graphs, matrices, trees	2600	x195
177G2	Fibonacci Strings matrices, strings	2600	x169
576D	Flights for Regular Customers dp, matrices	2700	x1302
1458C	Latin Square math, matrices	2700	x1193
575A	Fibonotci data structures, math, matrices	2700	x755
113D	Museum math, matrices, probabilities	2700	x647
1916H1	Matrix Rank (Easy Version) brute force, combinatorics, dp, math, matrices	2700	x579
1411G	No Game No Life bitmasks, games, math, matrices	2700	x574
1025E	Colored Cubes constructive algorithms, implementation, matrices	2700	x545
1916H2	Matrix Rank (Hard Version) combinatorics, dp, math, matrices, string suffix structures	2700	x496
498E	Stairs and Lines dp, matrices	2700	x447
1511F	Chainword brute force, data structures, dp, matrices, string suffix structures, strings	2700	x414
472F	Design Tutorial: Change the Goal constructive algorithms, math, matrices	2700	x247
1197F	Coloring Game dp, games, matrices	2700	x236
989E	A Trance of Nightfall dp, geometry, matrices, probabilities	2700	x227
86E	Long sequence brute force, math, matrices	2700	x177
267C	Berland Traffic math, matrices	2700	x158
1919F2	Wine Factory (Hard Version) data structures, dp, flows, greedy, matrices	2800	x726
1152F1	Neko Rules the Catniverse (Small Version) bitmasks, dp, matrices	2800	x507
736D	Permutations math, matrices	2800	x448
446D	DZY Loves Games math, matrices, probabilities	2800	x377
1616F	Tricolor Triangles brute force, graphs, math, matrices	2900	x580
167E	Wizards and Bets dfs and similar, graphs, math, matrices	2900	x541
917C	Pollywog combinatorics, dp, matrices	2900	x369
193E	Fibonacci Number brute force, math, matrices	2900	x319
1698G	Long Binary String bitmasks, math, matrices, meet-in-the-middle, number theory	2900	x299
497E	Subsequences Return dp, matrices	2900	x280
891E	Lust combinatorics, math, matrices	3000	x837
506E	Mr. Kitayuta's Gift combinatorics, dp, matrices, strings	3000	x678
1844G	Tree Weights bitmasks, constructive algorithms, data structures, dfs and similar, implementation, math, matrices, number theory, trees	3000	x632
1152F2	Neko Rules the Catniverse (Large Version) bitmasks, dp, matrices	3000	x586
453D	Little Pony and Elements of Harmony dp, matrices	3000	x458
1474F	1 2 3 4 ... dp, math, matrices	3000	x233
1286D	LCC data structures, math, matrices, probabilities	3100	x551

←