Problemset - Codeforces

→ Pay attention

Before contest
Codeforces Round #680 (Div. 1, based on Moscow Team Olympiad)
2 days

Before contest
Codeforces Round #680 (Div. 2, based on Moscow Team Olympiad)
2 days

→ Filter Problems

Difficulty: —

matrices

Add tag

Problems

#	Name
1375I	Cubic Lattice geometry, math, matrices, number theory	3500	x39
1266H	Red-Blue Graph dp, graphs, math, matrices, meet-in-the-middle	3400	x30
865G	Flowers and Chocolate combinatorics, math, matrices	3300	x84
618G	Combining Slimes dp, math, matrices, probabilities	3300	x108
1344F	Piet's Palette matrices	3200	x94
578F	Mirror Box matrices, trees	3200	x240
1184D2	Parallel Universes (Hard) math, matrices	3100	x21
446E	DZY Loves Bridges math, matrices	3100	x72
923E	Perpetual Subtraction fft, math, matrices	3100	x199
1286D	LCC data structures, math, matrices, probabilities	3100	x252
1152F2	Neko Rules the Catniverse (Large Version) bitmasks, dp, matrices	3000	x170
453D	Little Pony and Elements of Harmony dp, matrices	3000	x273
891E	Lust combinatorics, math, matrices	3000	x308
506E	Mr. Kitayuta's Gift combinatorics, dp, matrices, strings	3000	x323
497E	Subsequences Return dp, matrices	2900	x173
193E	Fibonacci Number brute force, math, matrices	2900	x207
917C	Pollywog combinatorics, dp, matrices	2900	x214
167E	Wizards and Bets dfs and similar, graphs, math, matrices	2900	x273
1152F1	Neko Rules the Catniverse (Small Version) bitmasks, dp, matrices	2800	x184
446D	DZY Loves Games math, matrices, probabilities	2800	x205
736D	Permutations math, matrices	2800	x286
267C	Berland Traffic math, matrices	2700	x113
1197F	Coloring Game dp, games, matrices	2700	x134
86E	Long sequence brute force, math, matrices	2700	x143
989E	A Trance of Nightfall dp, geometry, matrices, probabilities	2700	x171
472F	Design Tutorial: Change the Goal constructive algorithms, math, matrices	2700	x198
498E	Stairs and Lines dp, matrices	2700	x289
113D	Museum math, matrices, probabilities	2700	x338
575A	Fibonotci data structures, math, matrices	2700	x397
1025E	Colored Cubes constructive algorithms, implementation, matrices	2700	x410
576D	Flights for Regular Customers dp, matrices	2700	x639
177G2	Fibonacci Strings matrices, strings	2600	x86
1402C	Star Trek *special problem, combinatorics, dfs and similar, dp, games, graphs, matrices, trees	2600	x111
832E	Vasya and Shifts matrices	2600	x185
60E	Mushroom Gnomes math, matrices	2600	x221
917D	Stranger Trees dp, math, matrices, trees	2600	x398
1380F	Strange Addition data structures, dp, matrices	2600	x411
750E	New Year and Old Subsequence data structures, divide and conquer, dp, matrices	2600	x890
93D	Flags dp, math, matrices	2500	x259
351C	Jeff and Brackets dp, matrices	2500	x413
147B	Smile House binary search, graphs, matrices	2500	x514
1427E	Xum bitmasks, constructive algorithms, math, matrices, number theory	2500	x649
696D	Legen... data structures, dp, matrices, strings	2500	x664
348D	Turtles dp, matrices	2500	x667
51E	Pentagon combinatorics, graphs, matrices	2400	x245
662A	Gambling Nim bitmasks, math, matrices, probabilities	2400	x258
107D	Crime Management dp, graphs, matrices	2400	x291
593E	Strange Calculation and Cats dp, matrices	2400	x304
946F	Fibonacci String Subsequences combinatorics, dp, matrices	2400	x325
193C	Hamming Distance constructive algorithms, greedy, math, matrices	2400	x373
837F	Prefix Sums binary search, brute force, combinatorics, math, matrices	2400	x467
632F	Magic Matrix brute force, divide and conquer, graphs, matrices, trees	2400	x474
1106F	Lunar New Year and a Recursive Sequence math, matrices, number theory	2400	x576
226C	Anniversary data structures, implementation, math, matrices, number theory	2400	x609
780F	Axel and Marston in Bitland bitmasks, dp, graphs, matrices	2400	x746
959F	Mahmoud and Ehab and yet another xor task bitmasks, dp, math, matrices	2400	x856
385E	Bear in the Field math, matrices	2300	x435
1151F	Sonya and Informatics combinatorics, dp, matrices, probabilities	2300	x617
1101G	(Zero XOR Subset)-less math, matrices	2300	x813
1182E	Product Oriented Recurrence dp, math, matrices, number theory	2300	x1624
718C	Sasha and Array data structures, math, matrices	2300	x1772
1188B	Count Pairs math, matrices, number theory, two pointers	2300	x2843
514E	Darth Vader and Tree dp, matrices	2200	x937
1335F	Robots on a Grid data structures, dfs and similar, dsu, graphs, greedy, matrices	2200	x1437
954F	Runner's Problem dp, matrices, sortings	2100	x637
821E	Okabe and El Psy Kongroo dp, matrices	2100	x1091
1252K	Addition Robot data structures, math, matrices	2100	x1226
551D	GukiZ and Binary Operations combinatorics, implementation, math, matrices, number theory	2100	x1416
1023E	Down or Right constructive algorithms, interactive, matrices	2100	x1455
1117D	Magic Gems dp, math, matrices	2100	x2399
1332E	Height All the Same combinatorics, constructive algorithms, math, matrices	2100	x2645
852B	Neural Network country dp, matrices	2000	x734
696C	PLEASE combinatorics, dp, implementation, math, matrices	2000	x1504
621E	Wet Shark and Blocks dp, matrices	2000	x1869
717D	Dexterina’s Lab games, matrices, probabilities	1900	x1015
691E	Xor-sequences matrices	1900	x1221
222E	Decoding Genome dp, matrices	1900	x1432
582B	Once Again... constructive algorithms, dp, matrices	1900	x2652
1012B	Chemical table constructive algorithms, dfs and similar, dsu, graphs, matrices	1900	x2670
225C	Barcode dp, matrices	1700	x5759
337C	Quiz binary search, greedy, math, matrices, number theory	1600	x3795
166E	Tetrahedron dp, math, matrices	1500	x11624
485A	Factory implementation, math, matrices	1400	x6021