Problemset - Codeforces

→ Pay attention

Before contest
Rayan Programming Contest 2024 - Selection (Codeforces Round, Div. 1 + Div. 2)
6 days
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

math

Add tag

Problems

#	Name
287B	Pipeline binary search, math	1700	x9899
286E	Ladies' Shop constructive algorithms, fft, math	2800	x833
286A	Lucky Permutation constructive algorithms, math	1400	x3186
285E	Positions in Permutations combinatorics, dp, math	2600	x1001
284A	Cows and Primitive Roots implementation, math, number theory	1400	x6610
283E	Cow Tennis Tournament combinatorics, data structures, math	2800	x778
283D	Cows and Cool Sequences dp, math, number theory	2400	x543
282C	XOR and OR constructive algorithms, implementation, math	1500	x9443
282B	Painting Eggs greedy, math	1500	x13027
280E	Sequence Transformation brute force, data structures, dp, implementation, math	3000	x207
280C	Game on Tree implementation, math, probabilities, trees	2200	x4153
276D	Little Girl and Maximum XOR bitmasks, dp, greedy, implementation, math	1700	x13967
272D	Dima and Two Sequences combinatorics, math, sortings	1600	x2630
272B	Dima and Sequence implementation, math	1400	x4035
272A	Dima and Friends implementation, math	1000	x24784
271E	Three Horses constructive algorithms, math, number theory	2200	x505
271B	Prime Matrix binary search, brute force, math, number theory	1300	x13223
270A	Fancy Fence geometry, implementation, math	1100	x45818
269E	String Theory geometry, math, strings	3100	x109
269A	Magical Boxes greedy, math	1600	x3535
268E	Playlist math, probabilities, sortings	2100	x1026
268B	Buttons implementation, math	1000	x32674
267C	Berland Traffic math, matrices	2700	x164
267A	Subtractions math, number theory	900	x7583
266E	More Queries to Array... data structures, math	2500	x930
266D	BerDonalds graphs, math, shortest paths	2400	x899
266C	Below the Diagonal constructive algorithms, greedy, math	2100	x1354
261C	Maxim and Matrix constructive algorithms, dp, math	2000	x779
261B	Maxim and Restaurant dp, math, probabilities	1900	x1418
260A	Adding Digits implementation, math	1400	x14873
258D	Little Elephant and Broken Sorting dp, math, probabilities	2600	x1287
258C	Little Elephant and LCM binary search, combinatorics, dp, math	2000	x1795
258A	Little Elephant and Bits greedy, math	1100	x23110
257D	Sum greedy, math	1900	x1610
257C	View Angle brute force, geometry, math	1800	x4389
255E	Furlo and Rublo and Game games, implementation, math	2200	x871
255D	Mr. Bender and Square binary search, implementation, math	1800	x2011
251D	Two Sets bitmasks, math	2700	x479
251B	Playing with Permutations implementation, math	1800	x1276
249E	Endless Matrix math	2600	x320
249D	Donkey and Stars data structures, dp, geometry, math, sortings	2700	x462
248E	Piglet's Birthday dp, math, probabilities	2600	x584
248B	Chilly Willy math, number theory	1400	x5347
246B	Increase and Decrease greedy, math	1300	x11362
241B	Friends binary search, bitmasks, data structures, math	2700	x818
239A	Two Bags of Potatoes greedy, implementation, math	1200	x19034
238A	Not Wool Sequences constructive algorithms, math	1300	x2048
235E	Number Challenge combinatorics, dp, implementation, math, number theory	2600	x779
235B	Let's Play Osu! dp, math, probabilities	2000	x3592
233B	Non-square Equation binary search, brute force, math	1400	x7542
233A	Perfect Permutation implementation, math	800	x43010
232B	Table bitmasks, combinatorics, dp, math	1900	x1479
230B	T-primes binary search, implementation, math, number theory	1300	x76742
229E	Gifts combinatorics, dp, math, probabilities	2600	x466
229C	Triangles combinatorics, graphs, math	1900	x1630
226C	Anniversary data structures, implementation, math, matrices, number theory	2400	x914
226A	Flying Saucer Segments math	1400	x4012
225E	Unsolvable math, number theory	2100	x807
224A	Parallelepiped brute force, geometry, math	1100	x26984
223C	Partial Sums combinatorics, math, number theory	1900	x1568
222C	Reducing Fractions implementation, math, number theory, sortings	1800	x2264
221A	Little Elephant and Function implementation, math	1000	x15309
220D	Little Elephant and Triangle geometry, math	2500	x286
217D	Bitonix' Patrol bitmasks, brute force, combinatorics, dfs and similar, math	2900	x251
217B	Blackboard Fibonacci brute force, math	2100	x899
216E	Martian Luck math, number theory	2000	x590
216A	Tiling with Hexagons implementation, math	1200	x5025
215B	Olympic Medal greedy, math	1300	x5603
214B	Hometask brute force, constructive algorithms, greedy, math	1600	x4985
212C	Cowboys combinatorics, dp, math	2100	x389
209B	Pixels constructive algorithms, math	2100	x377
209A	Multicolored Marbles dp, math	1600	x2376
204C	Little Elephant and Furik and Rubik math, probabilities	2000	x1119
203D	Hit Ball geometry, implementation, math	1700	x1418
201B	Guess That Car! math, ternary search	1800	x1293
201A	Clear Symmetry constructive algorithms, dp, math	1700	x3016
200E	Tractor College implementation, math, number theory, ternary search	2400	x344
200B	Drinks implementation, math	800	x118422
198A	About Bacteria implementation, math	1700	x3157
197B	Limit math	1400	x4645
197A	Plate Game constructive algorithms, games, math	1600	x6360
195D	Analyzing Polyline geometry, math, sortings	1900	x1046
195B	After Training data structures, implementation, math	1300	x5210
195A	Let's Watch Football binary search, brute force, math	1000	x9091
194B	Square math	1200	x3553
194A	Exams implementation, math	900	x9917
193E	Fibonacci Number brute force, math, matrices	2900	x343
193C	Hamming Distance constructive algorithms, greedy, math, matrices	2400	x517
190A	Vasya and the Bus greedy, math	1100	x5896
189B	Counting Rhombi brute force, math	1300	x3954
188C	LCM *special problem, implementation, math	1400	x454
185D	Visit of the Great math, number theory	2600	x443
185B	Mushroom Scientists math, ternary search	1800	x1642
185A	Plant math	1300	x5951
183A	Headquarters constructive algorithms, math	1700	x550
182D	Common Divisors brute force, hashing, implementation, math, strings	1400	x8107
180F	Mathematical Analysis Rocks! constructive algorithms, implementation, math	1200	x2531
180B	Divisibility Rules math, number theory	2300	x349
175D	Plane of Tanks: Duel brute force, dp, math, probabilities	2400	x297
174A	Problem About Equation math	1100	x2907