Problemset - Codeforces

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math

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Problems

#	Name
1912F	Fugitive Frenzy math, probabilities	3100	x105
1184D2	Parallel Universes (Hard) math, matrices	3100	x102
1949H	Division Avoidance greedy, math	3100	x74
1425C	Captain of Knights math	3100	x39
1488J	Flower Shop *special problem, data structures, fft, math	3100	x31
755G	PolandBall and Many Other Balls combinatorics, divide and conquer, dp, fft, math, number theory	3200	x859
1349D	Slime and Biscuits math, probabilities	3200	x818
1621G	Weighted Increasing Subsequences data structures, dp, math	3200	x623
1025G	Company Acquisitions constructive algorithms, math	3200	x619
1034E	Little C Loves 3 III bitmasks, dp, math	3200	x600
553E	Kyoya and Train dp, fft, graphs, math, probabilities	3200	x536
1119H	Triple fft, math	3200	x516
1268D	Invertation in Tournament brute force, divide and conquer, graphs, math	3200	x482
1326F2	Wise Men (Hard Version) bitmasks, dp, math	3200	x470
1656H	Equal LCM Subsets data structures, math, number theory	3200	x413
1603E	A Perfect Problem combinatorics, dp, math	3200	x402
1081G	Mergesort Strikes Back math, probabilities	3200	x340
1598G	The Sum of Good Numbers hashing, math, string suffix structures, strings	3200	x324
1672G	Cross Xor constructive algorithms, graphs, math, matrices	3200	x313
1284F	New Year and Social Network data structures, graph matchings, graphs, math, trees	3200	x309
1864H	Asterism Stream dp, math, matrices	3200	x270
1656G	Cycle Palindrome constructive algorithms, graphs, math	3200	x270
571E	Geometric Progressions math	3200	x249
1819E	Roads in E City interactive, math, probabilities, trees	3200	x244
1223G	Wooden Raft binary search, math, number theory	3200	x226
1091G	New Year and the Factorisation Collaboration interactive, math, number theory	3200	x197
913G	Power Substring math, number theory	3200	x194
1704H1	Game of AI (easy version) combinatorics, constructive algorithms, dp, fft, math	3200	x170
1408I	Bitwise Magic dp, math	3200	x166
756E	Byteland coins combinatorics, dp, math	3200	x152
1566H	Xor-quiz constructive algorithms, dp, interactive, math, number theory	3200	x122
765G	Math, math everywhere brute force, dp, math, meet-in-the-middle, number theory	3200	x81
1776K	Uniform Chemistry dp, math	3200	x64
1403C	Chess Rush *special problem, combinatorics, dp, implementation, math	3200	x42
582D	Number of Binominal Coefficients dp, math, number theory	3300	x608
986F	Oppa Funcan Style Remastered graphs, math, number theory, shortest paths	3300	x564
623E	Transforming Sequence combinatorics, dp, fft, math	3300	x533
1556H	DIY Tree graphs, greedy, math, probabilities	3300	x323
1148G	Gold Experience constructive algorithms, graphs, math, number theory, probabilities	3300	x315
1718D	Permutation for Burenka data structures, graph matchings, greedy, math, trees	3300	x288
1528F	AmShZ Farm combinatorics, fft, math	3300	x274
1696G	Fishingprince Plays With Array Again brute force, data structures, geometry, math	3300	x265
1466H	Finding satisfactory solutions combinatorics, dp, graphs, greedy, math	3300	x261
1054G	New Road Network constructive algorithms, greedy, math	3300	x261
1548D2	Gregor and the Odd Cows (Hard) brute force, geometry, math, number theory	3300	x238
1750G	Doping combinatorics, dp, math	3300	x224
618G	Combining Slimes dp, math, matrices, probabilities	3300	x220
1641E	Special Positions combinatorics, divide and conquer, fft, math	3300	x203
1392I	Kevin and Grid fft, graphs, math	3300	x203
1450H2	Multithreading (Hard Version) combinatorics, implementation, math	3300	x165
1361F	Johnny and New Toy data structures, implementation, math	3300	x146
1718F	Burenka, an Array and Queries data structures, math, number theory	3300	x145
1209H	Moving Walkways data structures, greedy, math	3300	x136
865G	Flowers and Chocolate combinatorics, math, matrices	3300	x132
1580F	Problems for Codeforces combinatorics, fft, math	3300	x130
868G	El Toll Caves math	3300	x119
1737F	Ela and Prime GCD constructive algorithms, math, number theory	3300	x117
1381E	Origami geometry, math, sortings	3300	x100
901E	Cyclic Cipher fft, math	3300	x84
737F	Dirty plates constructive algorithms, math	3300	x69
865F	Egg Roulette bitmasks, brute force, divide and conquer, math, meet-in-the-middle	3300	x67
1912I	Innovative Washing Machine geometry, math, two pointers	3300	x54
715E	Complete the Permutations combinatorics, fft, graphs, math	3400	x342
1548E	Gregor and the Two Painters data structures, divide and conquer, graphs, greedy, math	3400	x338
794G	Replace All combinatorics, dp, math	3400	x323
1684H	Hard Cut constructive algorithms, dfs and similar, divide and conquer, math	3400	x235
1103E	Radix sum fft, math, number theory	3400	x220
1098E	Fedya the Potter binary search, implementation, math, number theory	3400	x212
848E	Days of Floral Colours combinatorics, divide and conquer, dp, fft, math	3400	x200
1553I	Stairs combinatorics, divide and conquer, dp, fft, math	3400	x195
773F	Test Data Generation combinatorics, divide and conquer, dp, fft, math, number theory	3400	x184
1242D	Number Discovery math	3400	x176
1601F	Two Sorts binary search, dfs and similar, math, meet-in-the-middle	3400	x167
1770G	Koxia and Bracket divide and conquer, fft, math	3400	x151
1299E	So Mean interactive, math	3400	x148
1158E	Strange device binary search, interactive, math, trees	3400	x147
1844H	Multiple of Three Cycles combinatorics, data structures, dp, dsu, math	3400	x131
913H	Don't Exceed math, probabilities	3400	x123
1552I	Organizing a Music Festival dfs and similar, math	3400	x121
1205F	Beauty of a Permutation constructive algorithms, math	3400	x121
1266H	Red-Blue Graph dp, graphs, math, matrices, meet-in-the-middle	3400	x99
1936E	Yet Yet Another Permutation Problem divide and conquer, fft, math	3400	x96
1045F	Shady Lady geometry, math	3400	x92
756F	Long number expression parsing, math, number theory	3400	x89
1896H1	Cyclic Hamming (Easy Version) brute force, divide and conquer, dp, fft, math, number theory	3400	x78
1310F	Bad Cryptography math, number theory	3400	x67
1280F	Intergalactic Sliding Puzzle combinatorics, constructive algorithms, math	3400	x58
1158F	Density of subarrays dp, math	3500	x392
1292E	Rin and The Unknown Flower constructive algorithms, greedy, interactive, math	3500	x327
1637H	Minimize Inversions Number data structures, greedy, math, sortings	3500	x300
1336E2	Chiori and Doll Picking (hard version) bitmasks, brute force, combinatorics, math	3500	x288
1830E	Bully Sort data structures, math	3500	x231
1270I	Xor on Figures constructive algorithms, fft, math	3500	x228
1086F	Forest Fires math	3500	x224
1687E	Become Big For Me combinatorics, constructive algorithms, greedy, math, number theory	3500	x215
1815F	OH NO1 (-2-3-4) constructive algorithms, graphs, math	3500	x214
1479E	School Clubs dp, fft, math, number theory, probabilities	3500	x188
1054H	Epic Convolution chinese remainder theorem, fft, math, number theory	3500	x173
1586I	Omkar and Mosaic combinatorics, constructive algorithms, math	3500	x157
1696H	Maximum Product? brute force, combinatorics, dp, greedy, implementation, math, two pointers	3500	x153