Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
2 days
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Before contest
Codeforces Round 941 (Div. 2)
2 days
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math

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Problems

#	Name
1556H	DIY Tree graphs, greedy, math, probabilities	3300	x319
1411F	The Thorny Path greedy, math	3000	x319
683D	Chocolate Bar *special problem, math	1400	x319
193E	Fibonacci Number brute force, math, matrices	2900	x320
986D	Perfect Encoding fft, math	3100	x321
73E	Morrowindows math, number theory	2400	x321
1815E	Bosco and Particle dp, math, number theory, strings	3100	x322
1598G	The Sum of Good Numbers hashing, math, string suffix structures, strings	3200	x323
794G	Replace All combinatorics, dp, math	3400	x323
180B	Divisibility Rules math, number theory	2300	x325
23D	Tetragon geometry, math	2600	x325
1292E	Rin and The Unknown Flower constructive algorithms, greedy, interactive, math	3500	x327
1806F1	GCD Master (easy version) greedy, math, number theory, sortings	2900	x328
57D	Journey dp, math	2500	x328
1063E	Lasers and Mirrors constructive algorithms, math	3000	x329
117D	Not Quick Transformation divide and conquer, math	2500	x330
64C	Table *special problem, greedy, implementation, math	1600	x331
717A	Festival Organization combinatorics, math, number theory	2900	x332
200E	Tractor College implementation, math, number theory, ternary search	2400	x332
93D	Flags dp, math, matrices	2500	x333
1776D	Teamwork constructive algorithms, greedy, math	2800	x334
460E	Roland and Rose brute force, geometry, math, sortings	2700	x334
1548E	Gregor and the Two Painters data structures, divide and conquer, graphs, greedy, math	3400	x335
1826F	Fading into Fog geometry, interactive, math, probabilities	2800	x336
603D	Ruminations on Ruminants geometry, math	2900	x337
1081G	Mergesort Strikes Back math, probabilities	3200	x338
100I	Rotation *special problem, geometry, math	1500	x338
715E	Complete the Permutations combinatorics, fft, graphs, math	3400	x341
50E	Square Equation Roots math	2300	x341
1942G	Bessie and Cards combinatorics, dp, math	2800	x343
843C	Upgrading Tree constructive algorithms, dfs and similar, graphs, math, trees	2600	x346
1359F	RC Kaboom Show binary search, brute force, data structures, geometry, math	2900	x348
1845F	Swimmers in the Pool dp, fft, math, number theory	2800	x349
883D	Packmen Strike Back binary search, dp, math	2500	x349
1067D	Computer Game dp, greedy, math, probabilities	3100	x351
1418F	Equal Product data structures, math, number theory, two pointers	3000	x352
1168E	Xor Permutations constructive algorithms, math	3100	x353
461D	Appleman and Complicated Task dsu, math	2800	x355
209B	Pixels constructive algorithms, math	2100	x355
1599G	Shortest path brute force, geometry, math, shortest paths	2700	x357
1423F	Coins math	2700	x360
1609G	A Stroll Around the Matrix data structures, greedy, math	3000	x361
1033F	Boolean Computer bitmasks, brute force, fft, math	2800	x364
852A	Digits brute force, implementation, math	2500	x364
1045H	Self-exploration math	2400	x365
1738G	Anti-Increasing Addicts constructive algorithms, dp, greedy, math	2900	x366
1844F2	Min Cost Permutation (Hard Version) binary search, constructive algorithms, data structures, greedy, math, sortings	2800	x367
1202F	You Are Given Some Letters... binary search, implementation, math	2700	x368
850D	Tournament Construction constructive algorithms, dp, graphs, greedy, math	2800	x368
1261F	Xor-Set bitmasks, divide and conquer, math	3100	x370
1562F	Tubular Bells interactive, math, number theory, probabilities	2900	x373
1450H1	Multithreading (Easy Version) combinatorics, fft, math	2900	x373
249D	Donkey and Stars data structures, dp, geometry, math, sortings	2700	x374
212C	Cowboys combinatorics, dp, math	2100	x376
1854E	Game Bundles brute force, constructive algorithms, dp, greedy, math	3000	x378
1473G	Tiles combinatorics, dp, fft, math	2800	x378
850E	Random Elections bitmasks, brute force, divide and conquer, fft, math	2800	x378
446D	DZY Loves Games math, matrices, probabilities	2800	x378
185D	Visit of the Great math, number theory	2600	x378
316E2	Summer Homework data structures, math	2300	x380
332D	Theft of Blueprints graphs, math	2400	x381
42D	Strange town constructive algorithms, math	2300	x385
1379E	Inverse Genealogy constructive algorithms, divide and conquer, dp, math, trees	2800	x387
37D	Lesson Timetable combinatorics, dp, math	2300	x387
1210E	Wojtek and Card Tricks math	2700	x389
1158F	Density of subarrays dp, math	3500	x391
1543E	The Final Pursuit bitmasks, constructive algorithms, divide and conquer, graphs, greedy, math	2700	x393
60D	Savior brute force, dsu, math	2500	x394
1656H	Equal LCM Subsets data structures, math, number theory	3200	x395
1488C	Two Policemen *special problem, binary search, brute force, math	1900	x397
1349F1	Slime and Sequences (Easy Version) dp, fft, math	3100	x397
375E	Red and Black Tree dp, implementation, math	3000	x397
1603E	A Perfect Problem combinatorics, dp, math	3200	x398
1583G	Omkar and Time Travel data structures, math	3000	x400
86B	Tetris revisited constructive algorithms, graph matchings, greedy, math	2200	x401
1732E	Location data structures, dp, math, number theory	2800	x404
930E	Coins Exhibition data structures, dp, math	2900	x404
1120B	Once in a casino constructive algorithms, greedy, implementation, math	2700	x405
396D	On Sum of Number of Inversions in Permutations combinatorics, math		x406
1728G	Illumination binary search, bitmasks, brute force, combinatorics, dp, math, two pointers	2700	x407
747F	Igor and Interesting Numbers brute force, combinatorics, dp, math	2500	x409
380D	Sereja and Cinema combinatorics, math	2500	x409
1809G	Prediction combinatorics, dp, math	2800	x410
1808E3	Minibuses on Venus (hard version) brute force, combinatorics, dp, math	2800	x413
95D	Horse Races dp, math	2500	x413
1299D	Around the World bitmasks, combinatorics, dfs and similar, dp, graphs, graphs, math, trees	3000	x414
154D	Flatland Fencing games, math	2400	x415
1918G	Permutation of Given constructive algorithms, math	2700	x417
1063D	Candies for Children brute force, math	2600	x417
717H	Pokermon League challenge math, probabilities	2400	x417
1630E	Expected Components combinatorics, math, number theory, probabilities	2900	x419
1067E	Random Forest Rank dp, graph matchings, math, trees	2800	x421
832C	Strange Radiation binary search, implementation, math	2500	x427
662A	Gambling Nim bitmasks, math, matrices, probabilities	2400	x429
1725E	Electrical Efficiency combinatorics, data structures, dp, math, number theory, trees	2500	x432
1600F	Party Organization brute force, math, probabilities	2300	x432
93E	Lostborn dp, math, number theory	2600	x433
188C	LCM *special problem, implementation, math	1400	x434
923E	Perpetual Subtraction fft, math, matrices	3100	x435
388D	Fox and Perfect Sets math	2700	x435