Problemset - Codeforces

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Problems

#	Name
1488J	Flower Shop *special problem, data structures, fft, math	3100	x31
1654H	Three Minimums combinatorics, constructive algorithms, divide and conquer, dp, fft, math	3500	x70
1909I	Short Permutation Problem combinatorics, dp, fft, math	1900	x75
1704H2	Game of AI (hard version) combinatorics, fft, math	3500	x76
1687F	Koishi's Unconscious Permutation fft, math	3500	x77
1896H1	Cyclic Hamming (Easy Version) brute force, divide and conquer, dp, fft, math, number theory	3400	x78
901E	Cyclic Cipher fft, math	3300	x84
1896H2	Cyclic Hamming (Hard Version) brute force, dp, fft, math, number theory	3500	x87
1936E	Yet Yet Another Permutation Problem divide and conquer, fft, math	3400	x96
1704G	Mio and Lucky Array constructive algorithms, fft, math, strings	3500	x97
1349F2	Slime and Sequences (Hard Version) dp, fft, math	3500	x107
1967E1	Again Counting Arrays (Easy Version) combinatorics, dp, fft, math	3100	x113
1477F	Nezzar and Chocolate Bars combinatorics, fft, math, probabilities	3500	x123
1580F	Problems for Codeforces combinatorics, fft, math	3300	x130
1184A3	Heidi Learns Hashing (Hard) fft, math, number theory	3100	x137
1770G	Koxia and Bracket divide and conquer, fft, math	3400	x151
1575C	Cyclic Sum data structures, fft, number theory	3000	x155
1704H1	Game of AI (easy version) combinatorics, constructive algorithms, dp, fft, math	3200	x170
1054H	Epic Convolution chinese remainder theorem, fft, math, number theory	3500	x173
773F	Test Data Generation combinatorics, divide and conquer, dp, fft, math, number theory	3400	x184
1479E	School Clubs dp, fft, math, number theory, probabilities	3500	x188
1553I	Stairs combinatorics, divide and conquer, dp, fft, math	3400	x195
848E	Days of Floral Colours combinatorics, divide and conquer, dp, fft, math	3400	x200
1641E	Special Positions combinatorics, divide and conquer, fft, math	3300	x203
1392I	Kevin and Grid fft, graphs, math	3300	x203
1010F	Tree fft, graphs, trees	3400	x211
1103E	Radix sum fft, math, number theory	3400	x220
1270I	Xor on Figures constructive algorithms, fft, math	3500	x228
1286F	Harry The Potter brute force, constructive algorithms, dp, fft, implementation, math	3100	x235
981H	K Paths combinatorics, data structures, dp, fft, math	3100	x265
1528F	AmShZ Farm combinatorics, fft, math	3300	x274
1644F	Basis combinatorics, fft, math, number theory	2900	x313
1218D	Xor Spanning Tree divide and conquer, fft, graphs	2400	x313
1671F	Permutation Counting brute force, combinatorics, dp, fft, math	2700	x316
1773G	Game of Questions bitmasks, combinatorics, dp, fft, math, probabilities	2800	x319
986D	Perfect Encoding fft, math	3100	x323
1439D	INOI Final Contests combinatorics, dp, fft	3100	x339
715E	Complete the Permutations combinatorics, fft, graphs, math	3400	x342
1334G	Substring Search bitmasks, brute force, fft	2900	x353
1845F	Swimmers in the Pool dp, fft, math, number theory	2800	x354
1218E	Product Tuples divide and conquer, fft	2500	x357
1033F	Boolean Computer bitmasks, brute force, fft, math	2800	x364
1792F2	Graph Coloring (hard version) brute force, combinatorics, divide and conquer, dp, fft, graphs	2900	x373
1450H1	Multithreading (Easy Version) combinatorics, fft, math	2900	x375
850E	Random Elections bitmasks, brute force, divide and conquer, fft, math	2800	x380
1473G	Tiles combinatorics, dp, fft, math	2800	x382
472G	Design Tutorial: Increase the Constraints bitmasks, data structures, fft	2800	x393
1349F1	Slime and Sequences (Easy Version) dp, fft, math	3100	x397
923E	Perpetual Subtraction fft, math, matrices	3100	x435
754E	Dasha and cyclic table bitmasks, brute force, fft, strings, trees	2600	x480
1119H	Triple fft, math	3200	x516
623E	Transforming Sequence combinatorics, dp, fft, math	3300	x533
1709F	Multiset of Strings bitmasks, brute force, dp, fft, flows, graphs, math, meet-in-the-middle, trees	2500	x534
553E	Kyoya and Train dp, fft, graphs, math, probabilities	3200	x536
1487G	String Counting combinatorics, dp, fft, math	2700	x575
1257G	Divisor Set divide and conquer, fft, greedy, math, number theory	2600	x579
1574F	Occurrences combinatorics, dfs and similar, dp, dsu, fft, graphs	2700	x585
1667E	Centroid Probabilities combinatorics, dp, fft, math	3000	x625
1731F	Function Sum brute force, combinatorics, dp, fft, math	2500	x660
958F3	Lightsabers (hard) fft	2600	x664
1613F	Tree Coloring combinatorics, divide and conquer, fft	2600	x666
1821F	Timber combinatorics, dp, fft, math	2600	x705
300D	Painting Square dp, fft	2300	x736
1398G	Running Competition bitmasks, fft, math, number theory	2600	x773
827E	Rusty String fft, math, strings	2700	x792
1251F	Red-White Fence combinatorics, fft	2500	x800
1542E2	Abnormal Permutation Pairs (hard version) combinatorics, dp, fft, math	2700	x808
286E	Ladies' Shop constructive algorithms, fft, math	2800	x818
755G	PolandBall and Many Other Balls combinatorics, divide and conquer, dp, fft, math, number theory	3200	x859
914G	Sum the Fibonacci bitmasks, divide and conquer, dp, fft, math	2600	x895
1536F	Omkar and Akmar chinese remainder theorem, combinatorics, constructive algorithms, fft, games, geometry, math, meet-in-the-middle, string suffix structures	2600	x913
1408G	Clusterization Counting combinatorics, dp, dsu, fft, graphs, trees	2700	x926
954I	Yet Another String Matching Problem fft, math	2200	x968
960G	Bandit Blues combinatorics, dp, fft, math	2900	x1031
1542E1	Abnormal Permutation Pairs (easy version) combinatorics, dp, fft, math	2400	x1185
1856E2	PermuTree (hard version) bitmasks, dfs and similar, dp, fft, greedy, implementation, math, trees	2700	x1309
1608D	Dominoes combinatorics, fft, graphs, math, number theory	2400	x1348
1726E	Almost Perfect combinatorics, fft, math	2400	x1355
993E	Nikita and Order Statistics chinese remainder theorem, fft, math	2300	x1361
1096G	Lucky Tickets divide and conquer, dp, fft	2400	x1378
1036E	Covered Points fft, geometry, number theory	2400	x1413
1548C	The Three Little Pigs combinatorics, dp, fft, math	2500	x1737
438E	The Child and Binary Tree combinatorics, divide and conquer, fft, number theory	3100	x1793
662C	Binary Table bitmasks, brute force, divide and conquer, dp, fft, math	2600	x1941
528D	Fuzzy Search bitmasks, brute force, fft	2500	x2069
1559E	Mocha and Stars combinatorics, dp, fft, math, number theory	2200	x2216
632E	Thief in a Shop divide and conquer, dp, fft, math	2400	x2573
1342E	Placing Rooks combinatorics, fft, math	2300	x2811
1119E	Pavel and Triangles brute force, dp, fft, greedy, ternary search	1900	x4889
1438C	Engineer Artem 2-sat, chinese remainder theorem, constructive algorithms, fft, flows	2000	x10165