Problemset - Codeforces

Please read the new rule regarding the restriction on the use of AI tools. ×

→ Pay attention

Before contest
Codeforces Round (Div. 1)
3 weeks

Before contest
Codeforces Round (Div. 2)
3 weeks

→ Filter Problems

Difficulty: —

math

Add tag

Problems

#	Name
337C	Quiz binary search, greedy, math, matrices, number theory	1600	x4895
337B	Routine Problem greedy, math, number theory	1400	x9335
336D	Vasily the Bear and Beautiful Strings combinatorics, math, number theory	2100	x972
336B	Vasily the Bear and Fly math	1900	x1217
336A	Vasily the Bear and Triangle implementation, math	1000	x10076
335E	Counting Skyscrapers dp, math, probabilities	2800	x224
332D	Theft of Blueprints graphs, math	2400	x385
329E	Evil math	3100	x169
327C	Magic Five combinatorics, math	1700	x3198
327B	Hungry Sequence math	1200	x19653
325B	Stadium and Games binary search, math	1800	x1525
322B	Ciel and Flowers combinatorics, math	1600	x11741
321D	Ciel and Flipboard dp, greedy, math	2900	x545
321A	Ciel and Robot binary search, implementation, math	1700	x3620
319A	Malek Dance Club combinatorics, math	1600	x2792
318A	Even Odds math	900	x113203
316E3	Summer Homework data structures, math	2300	x529
316E2	Summer Homework data structures, math	2300	x395
316D3	PE Lesson dp, math	2400	x585
316A2	Special Task math	1400	x2137
312B	Archer math, probabilities	1300	x11486
311D	Interval Cubing data structures, math	2600	x669
309A	Morning run binary search, math, two pointers	2000	x487
305D	Olya and Graph combinatorics, math	2200	x507
305B	Continued Fractions brute force, implementation, math	1700	x2061
304A	Pythagorean Theorem II brute force, math	1200	x10558
303E	Random Ranking dp, math, probabilities	3000	x319
303D	Rotatable Number math, number theory	2600	x296
303C	Minimum Modular brute force, graphs, math, number theory	2400	x875
303B	Rectangle Puzzle II implementation, math	1700	x1346
303A	Lucky Permutation Triple constructive algorithms, implementation, math	1300	x7904
300E	Empire Strikes Back binary search, math, number theory	2300	x1040
296A	Yaroslav and Permutations greedy, math	1100	x23072
294A	Shaass and Oskols implementation, math	800	x23439
293D	Ksusha and Square geometry, math, probabilities, two pointers	2700	x238
293C	Cube Problem brute force, math, number theory	2400	x568
288E	Polo the Penguin and Lucky Numbers dp, implementation, math	2800	x289
288C	Polo the Penguin and XOR operation implementation, math	1700	x2289
287B	Pipeline binary search, math	1700	x9668
286E	Ladies' Shop constructive algorithms, fft, math	2800	x832
286A	Lucky Permutation constructive algorithms, math	1400	x3164
285E	Positions in Permutations combinatorics, dp, math	2600	x990
284A	Cows and Primitive Roots implementation, math, number theory	1400	x6561
283E	Cow Tennis Tournament combinatorics, data structures, math	2800	x768
283D	Cows and Cool Sequences dp, math, number theory	2400	x532
282C	XOR and OR constructive algorithms, implementation, math	1500	x9380
282B	Painting Eggs greedy, math	1500	x12926
280E	Sequence Transformation brute force, data structures, dp, implementation, math	3000	x205
280C	Game on Tree implementation, math, probabilities, trees	2200	x3998
276D	Little Girl and Maximum XOR bitmasks, dp, greedy, implementation, math	1700	x13743
272D	Dima and Two Sequences combinatorics, math, sortings	1600	x2625
272B	Dima and Sequence implementation, math	1400	x4020
272A	Dima and Friends implementation, math	1000	x24483
271E	Three Horses constructive algorithms, math, number theory	2200	x490
271B	Prime Matrix binary search, brute force, math, number theory	1300	x13007
270A	Fancy Fence geometry, implementation, math	1100	x45253
269E	String Theory geometry, math, strings	3100	x108
269A	Magical Boxes greedy, math	1600	x3521
268E	Playlist math, probabilities, sortings	2100	x991
268B	Buttons implementation, math	1000	x32261
267C	Berland Traffic math, matrices	2700	x161
267A	Subtractions math, number theory	900	x7461
266E	More Queries to Array... data structures, math	2500	x920
266D	BerDonalds graphs, math, shortest paths	2400	x893
266C	Below the Diagonal constructive algorithms, greedy, math	2100	x1351
261C	Maxim and Matrix constructive algorithms, dp, math	2000	x774
261B	Maxim and Restaurant dp, math, probabilities	1900	x1409
260A	Adding Digits implementation, math	1400	x14619
258D	Little Elephant and Broken Sorting dp, math, probabilities	2600	x1253
258C	Little Elephant and LCM binary search, combinatorics, dp, math	2000	x1788
258A	Little Elephant and Bits greedy, math	1100	x22876
257D	Sum greedy, math	1900	x1591
257C	View Angle brute force, geometry, math	1800	x4298
255E	Furlo and Rublo and Game games, implementation, math	2200	x854
255D	Mr. Bender and Square binary search, implementation, math	1800	x1976
251D	Two Sets bitmasks, math	2700	x475
251B	Playing with Permutations implementation, math	1800	x1270
249E	Endless Matrix math	2600	x311
249D	Donkey and Stars data structures, dp, geometry, math, sortings	2700	x456
248E	Piglet's Birthday dp, math, probabilities	2600	x579
248B	Chilly Willy math, number theory	1400	x5306
246B	Increase and Decrease greedy, math	1300	x11272
241B	Friends binary search, bitmasks, data structures, math	2700	x805
239A	Two Bags of Potatoes greedy, implementation, math	1200	x18813
238A	Not Wool Sequences constructive algorithms, math	1300	x2036
235E	Number Challenge combinatorics, dp, implementation, math, number theory	2600	x775
235B	Let's Play Osu! dp, math, probabilities	2000	x3508
233B	Non-square Equation binary search, brute force, math	1400	x7467
233A	Perfect Permutation implementation, math	800	x42237
232B	Table bitmasks, combinatorics, dp, math	1900	x1461
230B	T-primes binary search, implementation, math, number theory	1300	x74812
229E	Gifts combinatorics, dp, math, probabilities	2600	x459
229C	Triangles combinatorics, graphs, math	1900	x1617
226C	Anniversary data structures, implementation, math, matrices, number theory	2400	x867
226A	Flying Saucer Segments math	1400	x3982
225E	Unsolvable math, number theory	2100	x802
224A	Parallelepiped brute force, geometry, math	1100	x26590
223C	Partial Sums combinatorics, math, number theory	1900	x1557
222C	Reducing Fractions implementation, math, number theory, sortings	1800	x2196
221A	Little Elephant and Function implementation, math	1000	x15187