Problemset - Codeforces

→ Pay attention

Before contest
Codeforces Round 941 (Div. 1)
13:47:46
Register now »

*has extra registration

Before contest
Codeforces Round 941 (Div. 2)
13:47:46
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

math

Add tag

Problems

#	Name
120E	Put Knight! games, math	1400	x2639
125A	Measuring Lengths in Baden math	1400	x2634
1764D	Doremy's Pegging Game combinatorics, dp, math	2000	x2632
362A	Two Semiknights Meet greedy, math	1500	x2629
1862G	The Great Equalizer binary search, data structures, math, sortings	2000	x2628
630G	Challenge Pennants combinatorics, math	1600	x2617
1154G	Minimum Possible LCM brute force, greedy, math, number theory	2200	x2613
1863E	Speedrun brute force, dfs and similar, dp, graphs, greedy, math, sortings, two pointers	2100	x2600
174A	Problem About Equation math	1100	x2593
1334E	Divisor Paths combinatorics, graphs, greedy, math, number theory	2200	x2589
1660F2	Promising String (hard version) data structures, implementation, math, strings	2100	x2585
272D	Dima and Two Sequences combinatorics, math, sortings	1600	x2581
1234E	Special Permutations math	2000	x2580
1610D	Not Quite Lee combinatorics, dp, math, number theory	2000	x2574
1415E	New Game Plus! constructive algorithms, greedy, math	2200	x2570
142A	Help Farmer brute force, math	1600	x2562
513B2	Permutations bitmasks, divide and conquer, math	1800	x2561
1250B	The Feast and the Bus brute force, constructive algorithms, greedy, math	1800	x2558
1097D	Makoto and a Blackboard dp, math, number theory, probabilities	2200	x2558
633D	Fibonacci-ish brute force, dp, hashing, implementation, math	2000	x2558
1267J	Just Arrange the Icons greedy, implementation, math	1800	x2556
632E	Thief in a Shop divide and conquer, dp, fft, math	2400	x2544
77B	Falling Anvils math, probabilities	1800	x2537
603B	Moodular Arithmetic combinatorics, dfs and similar, dsu, math, number theory	1800	x2533
1778D	Flexible String Revisit combinatorics, dp, math, probabilities	2100	x2531
599D	Spongebob and Squares brute force, math	1900	x2530
1081E	Missing Numbers binary search, constructive algorithms, greedy, math, number theory	1900	x2528
1542D	Priority Queue combinatorics, dp, implementation, math, ternary search	2200	x2526
1182E	Product Oriented Recurrence dp, math, matrices, number theory	2300	x2521
935D	Fafa and Ancient Alphabet math, probabilities	1900	x2513
402D	Upgrading Array dp, greedy, math, number theory	1800	x2513
1848D	Vika and Bonuses binary search, brute force, math, ternary search	2200	x2506
487C	Prefix Product Sequence constructive algorithms, math, number theory	2300	x2506
1214E	Petya and Construction Set constructive algorithms, graphs, math, sortings, trees	2000	x2505
1725H	Hot Black Hot White constructive algorithms, math	1800	x2495
1228E	Another Filling the Grid combinatorics, dp, math	2300	x2488
1540B	Tree Array brute force, combinatorics, dp, graphs, math, probabilities, trees	2300	x2483
1824B2	LuoTianyi and the Floating Islands (Hard Version) combinatorics, dfs and similar, math, probabilities, trees	2300	x2479
1029F	Multicolored Markers binary search, brute force, math, number theory	2000	x2467
1864E	Guess Game bitmasks, data structures, games, math, probabilities, sortings, strings, trees	2100	x2459
1717E	Madoka and The Best University math, number theory	2200	x2456
1511E	Colorings and Dominoes combinatorics, dp, greedy, math	2100	x2456
955C	Sad powers binary search, math, number theory	2100	x2453
180F	Mathematical Analysis Rocks! constructive algorithms, implementation, math	1200	x2447
765D	Artsem and Saunders constructive algorithms, dsu, math	1700	x2440
1658D2	388535 (Hard Version) bitmasks, brute force, data structures, math	2300	x2431
388B	Fox and Minimal path bitmasks, constructive algorithms, graphs, implementation, math	1900	x2431
373B	Making Sequences is Fun binary search, implementation, math	1600	x2428
1931G	One-Dimensional Puzzle combinatorics, math, number theory	2000	x2409
108B	Datatypes math, sortings	1400	x2407
980D	Perfect Groups dp, math, number theory	2100	x2406
433C	Ryouko's Memory Note implementation, math, sortings	1800	x2395
49B	Sum math	1500	x2382
1073E	Segment Sum bitmasks, combinatorics, dp, math	2300	x2374
1936B	Pinball binary search, data structures, implementation, math, two pointers	2000	x2369
1537F	Figure Fixing constructive algorithms, dfs and similar, dsu, graphs, greedy, math	2200	x2353
1526D	Kill Anton brute force, constructive algorithms, data structures, math, strings	2200	x2351
1202C	You Are Given a WASD-string... brute force, data structures, dp, greedy, implementation, math, strings	2100	x2351
1710B	Rain binary search, brute force, data structures, geometry, greedy, implementation, math	2100	x2348
1536E	Omkar and Forest combinatorics, graphs, math, shortest paths	2300	x2337
1305F	Kuroni and the Punishment math, number theory, probabilities	2500	x2337
1920E	Counting Binary Strings combinatorics, dp, math	2100	x2331
1593F	Red-Black Number dfs and similar, dp, implementation, math, meet-in-the-middle	2100	x2323
1761D	Carry Bit combinatorics, math	2100	x2317
57C	Array combinatorics, math	1900	x2312
547A	Mike and Frog brute force, greedy, implementation, math	2200	x2310
413C	Jeopardy! greedy, math	1400	x2303
1033D	Divisors interactive, math, number theory	2000	x2302
340E	Iahub and Permutations combinatorics, math	2000	x2297
135B	Rectangle and Square brute force, geometry, math	1600	x2295
1646E	Power Board brute force, dp, math, number theory	2200	x2292
1371E2	Asterism (Hard Version) binary search, combinatorics, dp, math, number theory, sortings	2300	x2292
1906M	Triangle Construction greedy, math	1700	x2291
1822G2	Magic Triples (Hard Version) brute force, data structures, math, number theory	2200	x2289
1868B2	Candy Party (Hard Version) bitmasks, constructive algorithms, dp, greedy, implementation, math	2100	x2262
526C	Om Nom and Candies brute force, greedy, math	2000	x2261
1924B	Space Harbour data structures, implementation, math, sortings	2100	x2254
985D	Sand Fortress binary search, constructive algorithms, math	2100	x2253
721D	Maxim and Array constructive algorithms, data structures, greedy, math	2000	x2250
908D	New Year and Arbitrary Arrangement dp, math, probabilities	2200	x2240
468C	Hack it! binary search, constructive algorithms, math	2500	x2235
288C	Polo the Penguin and XOR operation implementation, math	1700	x2232
1598E	Staircases brute force, combinatorics, data structures, dfs and similar, dp, implementation, math	2100	x2231
209A	Multicolored Marbles dp, math	1600	x2230
568B	Symmetric and Transitive combinatorics, dp, math	1900	x2219
1840G1	In Search of Truth (Easy Version) constructive algorithms, interactive, math, meet-in-the-middle, probabilities	2200	x2212
1741F	Multi-Colored Segments binary search, data structures, math, sortings	2000	x2212
1704E	Count Seconds brute force, constructive algorithms, dp, graphs, implementation, math	2200	x2212
1559E	Mocha and Stars combinatorics, dp, fft, math, number theory	2200	x2212
1270E	Divide Points constructive algorithms, geometry, math	2300	x2202
1477C	Nezzar and Nice Beatmap constructive algorithms, geometry, greedy, math, sortings	2200	x2199
846F	Random Query data structures, math, probabilities, two pointers	1800	x2199
173A	Rock-Paper-Scissors implementation, math	1300	x2198
1043F	Make It One bitmasks, combinatorics, dp, math, number theory, shortest paths	2500	x2171
1398E	Two Types of Spells binary search, data structures, greedy, implementation, math, sortings	2200	x2170
1787E	The Harmonization of XOR bitmasks, constructive algorithms, greedy, math	2100	x2169
353B	Two Heaps combinatorics, constructive algorithms, greedy, implementation, math, sortings	1900	x2169
1592D	Hemose in ICPC ? binary search, dfs and similar, implementation, interactive, math, number theory, trees	2300	x2156
533C	Board Game games, greedy, implementation, math	1700	x2141
557D	Vitaly and Cycle combinatorics, dfs and similar, graphs, math	2000	x2132