Problemset - Codeforces

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CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
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Problems

#	Name
2038F	Alternative Platforms combinatorics, data structures, fft, math, sortings	2500	x270
2025E	Card Game combinatorics, dp, fft, greedy, math	2200	x1744
2021E1	Digital Village (Easy Version) brute force, data structures, dfs and similar, dp, dsu, fft, graphs, greedy, implementation, math, trees	2300	x1477
1991H	Prime Split Game bitmasks, dp, fft, games, math, number theory	3300	x505
1988F	Heartbeat combinatorics, dp, fft, math	3000	x214
1975G	Zimpha Fan Club fft, greedy, math, strings	3000	x235
1967E1	Again Counting Arrays (Easy Version) combinatorics, dp, fft, math	3100	x217
1936E	Yet Yet Another Permutation Problem divide and conquer, fft, math	3400	x125
1909I	Short Permutation Problem combinatorics, dp, fft, math	1900	x119
1896H2	Cyclic Hamming (Hard Version) brute force, dp, fft, math, number theory	3500	x105
1896H1	Cyclic Hamming (Easy Version) brute force, divide and conquer, dp, fft, math, number theory	3400	x90
1856E2	PermuTree (hard version) bitmasks, dfs and similar, dp, fft, greedy, implementation, math, trees	2700	x1440
1845F	Swimmers in the Pool dp, fft, math, number theory	2800	x373
1821F	Timber combinatorics, dp, fft, math	2600	x764
1792F2	Graph Coloring (hard version) brute force, combinatorics, divide and conquer, dp, fft, graphs	2900	x399
1773G	Game of Questions bitmasks, combinatorics, dp, fft, math, probabilities	2800	x391
1770G	Koxia and Bracket divide and conquer, fft, math	3400	x159
1731F	Function Sum brute force, combinatorics, dp, fft, math	2500	x706
1726E	Almost Perfect combinatorics, fft, math	2400	x1436
1709F	Multiset of Strings bitmasks, brute force, dp, fft, flows, graphs, math, meet-in-the-middle, trees	2500	x557
1704H2	Game of AI (hard version) combinatorics, fft, math	3500	x93
1704H1	Game of AI (easy version) combinatorics, constructive algorithms, dp, fft, math	3200	x186
1704G	Mio and Lucky Array constructive algorithms, fft, math, strings	3500	x115
1687F	Koishi's Unconscious Permutation fft, math	3500	x86
1671F	Permutation Counting brute force, combinatorics, dp, fft, math	2700	x335
1667E	Centroid Probabilities combinatorics, dp, fft, math	3000	x680
1654H	Three Minimums combinatorics, constructive algorithms, divide and conquer, dp, fft, math	3500	x80
1644F	Basis combinatorics, fft, math, number theory	2900	x329
1641E	Special Positions combinatorics, divide and conquer, fft, math	3300	x210
1613F	Tree Coloring combinatorics, divide and conquer, fft	2600	x698
1608D	Dominoes combinatorics, fft, graphs, math, number theory	2400	x1403
1580F	Problems for Codeforces combinatorics, fft, math	3300	x133
1575C	Cyclic Sum data structures, fft, number theory	3000	x165
1574F	Occurrences combinatorics, dfs and similar, dp, dsu, fft, graphs	2700	x631
1559E	Mocha and Stars combinatorics, dp, fft, math, number theory	2200	x2332
1553I	Stairs combinatorics, divide and conquer, dp, fft, math	3400	x205
1548C	The Three Little Pigs combinatorics, dp, fft, math	2500	x1844
1542E2	Abnormal Permutation Pairs (hard version) combinatorics, dp, fft, math	2700	x866
1542E1	Abnormal Permutation Pairs (easy version) combinatorics, dp, fft, math	2400	x1256
1536F	Omkar and Akmar chinese remainder theorem, combinatorics, constructive algorithms, fft, games, geometry, math, meet-in-the-middle, string suffix structures	2600	x964
1528F	AmShZ Farm combinatorics, fft, math	3300	x289
1488J	Flower Shop *special problem, data structures, fft, math	3100	x35
1487G	String Counting combinatorics, dp, fft, math	2700	x602
1479E	School Clubs dp, fft, math, number theory, probabilities	3500	x215
1477F	Nezzar and Chocolate Bars combinatorics, fft, math, probabilities	3500	x135
1473G	Tiles combinatorics, dp, fft, math	2800	x402
1450H1	Multithreading (Easy Version) combinatorics, fft, math	2900	x439
1439D	INOI Final Contests combinatorics, dp, fft	3100	x387
1438C	Engineer Artem 2-sat, chinese remainder theorem, constructive algorithms, fft, flows	2000	x10600
1408G	Clusterization Counting combinatorics, dp, dsu, fft, graphs, trees	2700	x1071
1398G	Running Competition bitmasks, fft, math, number theory	2600	x1120
1392I	Kevin and Grid fft, graphs, math	3300	x205
1349F2	Slime and Sequences (Hard Version) dp, fft, math	3500	x114
1349F1	Slime and Sequences (Easy Version) dp, fft, math	3100	x418
1342E	Placing Rooks combinatorics, fft, math	2300	x3118
1334G	Substring Search bitmasks, brute force, fft	2900	x374
1286F	Harry The Potter brute force, constructive algorithms, dp, fft, implementation, math	3100	x247
1270I	Xor on Figures constructive algorithms, fft, math	3500	x241
1257G	Divisor Set divide and conquer, fft, greedy, math, number theory	2600	x619
1251F	Red-White Fence combinatorics, fft	2500	x826
1218E	Product Tuples divide and conquer, fft	2500	x383
1218D	Xor Spanning Tree divide and conquer, fft, graphs	2400	x507
1184A3	Heidi Learns Hashing (Hard) fft, math, number theory	3100	x139
1119H	Triple fft, math	3200	x575
1119E	Pavel and Triangles brute force, dp, fft, greedy, ternary search	1900	x5053
1103E	Radix sum fft, math, number theory	3400	x234
1096G	Lucky Tickets divide and conquer, dp, fft	2400	x1506
1054H	Epic Convolution chinese remainder theorem, fft, math, number theory	3500	x179
1036E	Covered Points fft, geometry, number theory	2400	x1660
1033F	Boolean Computer bitmasks, brute force, fft, math	2800	x393
1010F	Tree fft, graphs, trees	3400	x219
993E	Nikita and Order Statistics chinese remainder theorem, fft, math	2300	x1433
986D	Perfect Encoding fft, math	3100	x332
981H	K Paths combinatorics, data structures, dp, fft, math	3100	x271
960G	Bandit Blues combinatorics, dp, fft, math	2900	x1073
958F3	Lightsabers (hard) fft	2600	x702
954I	Yet Another String Matching Problem fft, math	2200	x1031
923E	Perpetual Subtraction fft, math, matrices	3100	x455
914G	Sum the Fibonacci bitmasks, divide and conquer, dp, fft, math	2600	x936
901E	Cyclic Cipher fft, math	3300	x88
850E	Random Elections bitmasks, brute force, divide and conquer, fft, math	2800	x403
848E	Days of Floral Colours combinatorics, divide and conquer, dp, fft, math	3400	x212
827E	Rusty String fft, math, strings	2700	x968
773F	Test Data Generation combinatorics, divide and conquer, dp, fft, math, number theory	3400	x189
755G	PolandBall and Many Other Balls combinatorics, divide and conquer, dp, fft, math, number theory	3200	x923
754E	Dasha and cyclic table bitmasks, brute force, fft, strings, trees	2600	x503
715E	Complete the Permutations combinatorics, fft, graphs, math	3400	x357
662C	Binary Table bitmasks, brute force, divide and conquer, dp, fft, math	2600	x2037
632E	Thief in a Shop divide and conquer, dp, fft, math	2400	x2832
623E	Transforming Sequence combinatorics, dp, fft, math	3300	x550
553E	Kyoya and Train dp, fft, graphs, math, probabilities	3200	x557
528D	Fuzzy Search bitmasks, brute force, fft	2500	x2246
472G	Design Tutorial: Increase the Constraints bitmasks, data structures, fft	2800	x406
438E	The Child and Binary Tree combinatorics, divide and conquer, fft, number theory	3100	x1894
300D	Painting Square dp, fft	2300	x756
286E	Ladies' Shop constructive algorithms, fft, math	2800	x833