Problemset - Codeforces

→ Pay attention

Contest is running
Kotlin Heroes: Practice 10
07:33:48
Register now »

Before contest
Kotlin Heroes: Episode 10
08:33:48
Register now »

→ Filter Problems

Difficulty: —

math

Add tag

Problems

#	Name
1045H	Self-exploration math	2400	x365
1033F	Boolean Computer bitmasks, brute force, fft, math	2800	x364
852A	Digits brute force, implementation, math	2500	x364
1609G	A Stroll Around the Matrix data structures, greedy, math	3000	x362
1423F	Coins math	2700	x361
1599G	Shortest path brute force, geometry, math, shortest paths	2700	x357
209B	Pixels constructive algorithms, math	2100	x357
1418F	Equal Product data structures, math, number theory, two pointers	3000	x355
1168E	Xor Permutations constructive algorithms, math	3100	x355
461D	Appleman and Complicated Task dsu, math	2800	x355
1845F	Swimmers in the Pool dp, fft, math, number theory	2800	x354
1067D	Computer Game dp, greedy, math, probabilities	3100	x354
1359F	RC Kaboom Show binary search, brute force, data structures, geometry, math	2900	x350
883D	Packmen Strike Back binary search, dp, math	2500	x349
843C	Upgrading Tree constructive algorithms, dfs and similar, graphs, math, trees	2600	x346
50E	Square Equation Roots math	2300	x344
715E	Complete the Permutations combinatorics, fft, graphs, math	3400	x342
1081G	Mergesort Strikes Back math, probabilities	3200	x340
100I	Rotation *special problem, geometry, math	1500	x340
1776D	Teamwork constructive algorithms, greedy, math	2800	x339
1826F	Fading into Fog geometry, interactive, math, probabilities	2800	x338
1548E	Gregor and the Two Painters data structures, divide and conquer, graphs, greedy, math	3400	x338
603D	Ruminations on Ruminants geometry, math	2900	x337
460E	Roland and Rose brute force, geometry, math, sortings	2700	x335
93D	Flags dp, math, matrices	2500	x334
717A	Festival Organization combinatorics, math, number theory	2900	x333
200E	Tractor College implementation, math, number theory, ternary search	2400	x333
64C	Table *special problem, greedy, implementation, math	1600	x331
1063E	Lasers and Mirrors constructive algorithms, math	3000	x330
117D	Not Quick Transformation divide and conquer, math	2500	x330
57D	Journey dp, math	2500	x329
1806F1	GCD Master (easy version) greedy, math, number theory, sortings	2900	x328
1805F2	Survival of the Weakest (hard version) greedy, math, sortings, two pointers	3100	x327
1292E	Rin and The Unknown Flower constructive algorithms, greedy, interactive, math	3500	x327
180B	Divisibility Rules math, number theory	2300	x327
1815E	Bosco and Particle dp, math, number theory, strings	3100	x326
23D	Tetragon geometry, math	2600	x325
1598G	The Sum of Good Numbers hashing, math, string suffix structures, strings	3200	x324
1556H	DIY Tree graphs, greedy, math, probabilities	3300	x323
986D	Perfect Encoding fft, math	3100	x323
794G	Replace All combinatorics, dp, math	3400	x323
193E	Fibonacci Number brute force, math, matrices	2900	x322
73E	Morrowindows math, number theory	2400	x322
1773G	Game of Questions bitmasks, combinatorics, dp, fft, math, probabilities	2800	x320
1571D	Sweepstake *special problem, brute force, constructive algorithms, implementation, math	1800	x320
1411F	The Thorny Path greedy, math	3000	x320
683D	Chocolate Bar *special problem, math	1400	x319
1847E	Triangle Platinum? brute force, combinatorics, implementation, interactive, math, probabilities	2900	x317
1671F	Permutation Counting brute force, combinatorics, dp, fft, math	2700	x316
60E	Mushroom Gnomes math, matrices	2600	x316
1148G	Gold Experience constructive algorithms, graphs, math, number theory, probabilities	3300	x315
1672G	Cross Xor constructive algorithms, graphs, math, matrices	3200	x313
1644F	Basis combinatorics, fft, math, number theory	2900	x313
1468L	Prime Divisors Selection binary search, greedy, math, number theory	2700	x313
303E	Random Ranking dp, math, probabilities	3000	x312
679D	Bear and Chase brute force, dfs and similar, graphs, implementation, math, probabilities	2900	x311
1284F	New Year and Social Network data structures, graph matchings, graphs, math, trees	3200	x309
468E	Permanent dp, graph matchings, math, meet-in-the-middle	3100	x308
1361D	Johnny and James greedy, implementation, math, trees	2900	x307
78D	Archer's Shot binary search, geometry, math, two pointers	2300	x302
1698G	Long Binary String bitmasks, math, matrices, meet-in-the-middle, number theory	2900	x301
1637H	Minimize Inversions Number data structures, greedy, math, sortings	3500	x300
568D	Sign Posts brute force, geometry, math	2800	x298
1027G	X-mouse in the Campus bitmasks, math, number theory	2600	x297
97C	Winning Strategy binary search, graphs, math, shortest paths	2400	x297
991F	Concise and clear brute force, greedy, implementation, math	2700	x294
1662C	European Trip dp, graphs, math, matrices		x289
175D	Plane of Tanks: Duel brute force, dp, math, probabilities	2400	x289
1718D	Permutation for Burenka data structures, graph matchings, greedy, math, trees	3300	x288
1336E2	Chiori and Doll Picking (hard version) bitmasks, brute force, combinatorics, math	3500	x288
249E	Endless Matrix math	2600	x287
288E	Polo the Penguin and Lucky Numbers dp, implementation, math	2800	x283
449E	Jzzhu and Squares dp, math, number theory	2900	x281
933D	A Creative Cutout brute force, combinatorics, math	2900	x280
802L	Send the Fool Further! (hard) dfs and similar, dp, math, trees	2400	x280
303D	Rotatable Number math, number theory	2600	x278
1528F	AmShZ Farm combinatorics, fft, math	3300	x274
1874E	Jellyfish and Hack dp, math	3000	x273
220D	Little Elephant and Triangle geometry, math	2500	x273
830E	Perpetual Motion Machine constructive algorithms, dp, graphs, implementation, math, trees	3100	x272
593C	Beautiful Function constructive algorithms, math	2200	x272
1012E	Cycle sort dsu, math	3100	x271
1864H	Asterism Stream dp, math, matrices	3200	x270
1656G	Cycle Palindrome constructive algorithms, graphs, math	3200	x270
457D	Bingo! combinatorics, math, probabilities	2700	x269
76C	Mutation bitmasks, dp, math	2700	x269
1603F	October 18, 2017 combinatorics, dp, implementation, math	2700	x268
1806F2	GCD Master (hard version) greedy, math, sortings	2900	x267
100E	Lamps in a Line *special problem, math	1600	x266
1860F	Evaluate RBS data structures, geometry, implementation, math, sortings	2900	x265
1696G	Fishingprince Plays With Array Again brute force, data structures, geometry, math	3300	x265
981H	K Paths combinatorics, data structures, dp, fft, math	3100	x265
1906K	Deck-Building Game divide and conquer, math	2500	x264
1031F	Familiar Operations brute force, graphs, math	2800	x264
1884E	Hard Design greedy, implementation, math	2800	x263
1466H	Finding satisfactory solutions combinatorics, dp, graphs, greedy, math	3300	x261
1054G	New Road Network constructive algorithms, greedy, math	3300	x261
394D	Physical Education and Buns brute force, implementation, math		x261
1016G	Appropriate Team bitmasks, math, number theory	2700	x256
1951G	Clacking Balls combinatorics, math, probabilities	3100	x254