Problemset - Codeforces

→ Pay attention

Before contest
Codeforces Round 953 (Div. 2)
13:22:39
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

math

Add tag

Problems

#	Name
1728E	Red-Black Pepper brute force, data structures, greedy, math, number theory	2300	x1668
1726H	Mainak and the Bleeding Polygon binary search, geometry, implementation, math	3500	x82
1726E	Almost Perfect combinatorics, fft, math	2400	x1365
1726B	Mainak and Interesting Sequence bitmasks, constructive algorithms, math	1100	x14803
1726A	Mainak and Array greedy, math	900	x20343
1725H	Hot Black Hot White constructive algorithms, math	1800	x2524
1725G	Garage binary search, geometry, math	1500	x5669
1725E	Electrical Efficiency combinatorics, data structures, dp, math, number theory, trees	2500	x441
1725D	Deducing Sortability binary search, bitmasks, math	2900	x119
1725C	Circular Mirror binary search, combinatorics, geometry, math, two pointers	2000	x1559
1725A	Accumulation of Dominoes math	800	x9102
1720E	Misha and Paintings constructive algorithms, data structures, greedy, implementation, math	2700	x748
1720B	Interesting Sum brute force, data structures, greedy, math, sortings	800	x20840
1720A	Burenka Plays with Fractions math, number theory	900	x21913
1719B	Mathematical Circus constructive algorithms, math	800	x18343
1719A	Chip Game games, math	800	x25096
1718F	Burenka, an Array and Queries data structures, math, number theory	3300	x146
1718E	Impressionism constructive algorithms, graphs, implementation, math	3500	x105
1718D	Permutation for Burenka data structures, graph matchings, greedy, math, trees	3300	x291
1718C	Tonya and Burenka-179 data structures, greedy, math, number theory	2400	x1534
1718B	Fibonacci Strings greedy, implementation, math, number theory	2000	x2903
1717E	Madoka and The Best University math, number theory	2200	x2525
1717D	Madoka and The Corruption Scheme combinatorics, constructive algorithms, greedy, math	1900	x4294
1717A	Madoka and Strange Thoughts math, number theory	800	x19229
1716F	Bags with Balls combinatorics, dp, math, number theory	2500	x1007
1716D	Chip Move brute force, dp, math	2000	x5040
1716B	Permutation Chain constructive algorithms, math	800	x21247
1716A	2-3 Moves greedy, math	800	x31802
1715F	Crop Squares constructive algorithms, geometry, interactive, math	2700	x504
1715C	Monoblock combinatorics, data structures, implementation, math	1700	x8426
1715B	Beautiful Array constructive algorithms, greedy, math	1000	x20511
1715A	Crossmarket constructive algorithms, greedy, math	800	x23288
1714E	Add Modulo 10 brute force, math, number theory	1400	x15620
1714A	Everyone Loves to Sleep implementation, math	900	x28874
1713F	Lost Array bitmasks, combinatorics, constructive algorithms, dp, math	2900	x515
1713C	Build Permutation constructive algorithms, dp, math	1200	x16934
1712E2	LCM Sum (hard version) brute force, data structures, math, number theory, two pointers	2500	x1191
1712E1	LCM Sum (easy version) binary search, brute force, combinatorics, math, number theory, two pointers	2300	x2060
1710C	XOR Triangle bitmasks, brute force, constructive algorithms, dp, greedy, math	2500	x1288
1710B	Rain binary search, brute force, data structures, geometry, greedy, implementation, math	2100	x2371
1710A	Color the Picture constructive algorithms, greedy, math	1500	x10682
1709F	Multiset of Strings bitmasks, brute force, dp, fft, flows, graphs, math, meet-in-the-middle, trees	2500	x538
1709D	Rorororobot binary search, data structures, greedy, math	1700	x8170
1709A	Three Doors brute force, greedy, implementation, math	800	x29187
1708B	Difference of GCDs constructive algorithms, math	1100	x19803
1708A	Difference Operations greedy, math	800	x21544
1707D	Partial Virtual Trees combinatorics, dfs and similar, dp, math, trees	3000	x590
1706D2	Chopping Carrots (Hard Version) brute force, constructive algorithms, data structures, dp, greedy, math, number theory, two pointers	2400	x1662
1706B	Making Towers dp, greedy, math	1100	x16289
1705D	Mark and Lightbulbs combinatorics, constructive algorithms, greedy, math, sortings	1800	x6155
1704H2	Game of AI (hard version) combinatorics, fft, math	3500	x79
1704H1	Game of AI (easy version) combinatorics, constructive algorithms, dp, fft, math	3200	x173
1704G	Mio and Lucky Array constructive algorithms, fft, math, strings	3500	x99
1704E	Count Seconds brute force, constructive algorithms, dp, graphs, implementation, math	2200	x2243
1704D	Magical Array constructive algorithms, hashing, implementation, math	1900	x4890
1703G	Good Key, Bad Key bitmasks, brute force, dp, greedy, math	1600	x10185
1702F	Equate Multisets constructive algorithms, data structures, greedy, math, number theory	1700	x8050
1701F	Points combinatorics, data structures, implementation, math, matrices	2500	x902
1701D	Permutation Restoration binary search, data structures, greedy, math, sortings, two pointers	1900	x5544
1700D	River Locks binary search, dp, greedy, math	1900	x5889
1700B	Palindromic Numbers constructive algorithms, implementation, math	1100	x18364
1700A	Optimal Path constructive algorithms, greedy, math	800	x22636
1699E	Three Days Grace data structures, dp, greedy, math, number theory, two pointers	2600	x1106
1699C	The Third Problem combinatorics, constructive algorithms, math	1700	x9490
1699A	The Third Three Number Problem constructive algorithms, math	800	x23718
1698G	Long Binary String bitmasks, math, matrices, meet-in-the-middle, number theory	2900	x307
1698F	Equal Reversal constructive algorithms, graphs, implementation, math	2800	x597
1697E	Coloring brute force, combinatorics, constructive algorithms, dp, geometry, graphs, greedy, implementation, math	2400	x1152
1696H	Maximum Product? brute force, combinatorics, dp, greedy, implementation, math, two pointers	3500	x156
1696G	Fishingprince Plays With Array Again brute force, data structures, geometry, math	3300	x268
1696E	Placing Jinas combinatorics, math	2000	x3887
1696C	Fishingprince Plays With Array constructive algorithms, greedy, implementation, math	1400	x11372
1692H	Gambling data structures, dp, greedy, math	1700	x7168
1692F	3SUM brute force, math	1300	x21709
1691F	K-Set Tree combinatorics, dfs and similar, dp, math, trees	2500	x930
1691C	Sum of Substrings brute force, constructive algorithms, greedy, math, strings	1400	x15225
1691A	Beat The Odds brute force, greedy, math	800	x30029
1690F	Shifting String graphs, math, number theory, strings	1700	x6898
1690E	Price Maximization binary search, greedy, math, two pointers	1500	x14683
1687F	Koishi's Unconscious Permutation fft, math	3500	x79
1687E	Become Big For Me combinatorics, constructive algorithms, greedy, math, number theory	3500	x221
1687D	Cute number binary search, brute force, data structures, dsu, implementation, math	2900	x560
1684H	Hard Cut constructive algorithms, dfs and similar, divide and conquer, math	3400	x236
1684G	Euclid Guess constructive algorithms, flows, graph matchings, math, number theory	2800	x583
1684B	Z mod X = C constructive algorithms, math	800	x20699
1684A	Digit Minimization constructive algorithms, games, math, strings	800	x23603
1682E	Unordered Swaps constructive algorithms, dfs and similar, graphs, greedy, math, sortings, trees	2700	x567
1682C	LIS or Reverse LIS? constructive algorithms, greedy, implementation, math	1400	x14266
1681B	Card Trick implementation, math	800	x19898
1680D	Dog Walking brute force, greedy, math	2400	x1128
1680A	Minimums and Maximums brute force, math	800	x21079
1679F	Formalism for Formalism bitmasks, dp, math	2600	x507
1679A	AvtoBus brute force, greedy, math, number theory	900	x22476
1677F	Tokitsukaze and Gems dp, math	3500	x88
1677D	Tokitsukaze and Permutations dp, math	2500	x1222
1677B	Tokitsukaze and Meeting data structures, implementation, math	1700	x4075
1676C	Most Similar Words brute force, greedy, implementation, implementation, math, strings	800	x29120
1676B	Equal Candies greedy, math, sortings	800	x45956
1675A	Food for Animals greedy, math	800	x31859
1674E	Breaking the Wall binary search, brute force, constructive algorithms, greedy, math	2000	x6214