Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
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Codeforces Round 941 (Div. 2)
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combinatorics

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Problems

#	Name
1930I	Counting Is Fun combinatorics	3500	x49
1654H	Three Minimums combinatorics, constructive algorithms, divide and conquer, dp, fft, math	3500	x69
1704H2	Game of AI (hard version) combinatorics, fft, math	3500	x74
1761F2	Anti-median (Hard Version) combinatorics, dp, math	3500	x76
1477F	Nezzar and Chocolate Bars combinatorics, fft, math, probabilities	3500	x121
1696H	Maximum Product? brute force, combinatorics, dp, greedy, implementation, math, two pointers	3500	x152
1586I	Omkar and Mosaic combinatorics, constructive algorithms, math	3500	x156
1893E	Cacti Symphony combinatorics, dfs and similar, dp, graphs	3500	x175
1835E	Old Mobile combinatorics, dp, probabilities	3500	x200
1687E	Become Big For Me combinatorics, constructive algorithms, greedy, math, number theory	3500	x211
1336E2	Chiori and Doll Picking (hard version) bitmasks, brute force, combinatorics, math	3500	x283
1292F	Nora's Toy Boxes bitmasks, combinatorics, dp	3500	x297
1280F	Intergalactic Sliding Puzzle combinatorics, constructive algorithms, math	3400	x56
1844H	Multiple of Three Cycles combinatorics, data structures, dp, dsu, math	3400	x127
804F	Fake bullions combinatorics, dfs and similar, dp, graphs, number theory	3400	x137
773F	Test Data Generation combinatorics, divide and conquer, dp, fft, math, number theory	3400	x184
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
914H	Ember and Storm's Tree Game combinatorics, dp, games, trees	3400	x226
794G	Replace All combinatorics, dp, math	3400	x323
715E	Complete the Permutations combinatorics, fft, graphs, math	3400	x341
1580F	Problems for Codeforces combinatorics, fft, math	3300	x130
865G	Flowers and Chocolate combinatorics, math, matrices	3300	x130
1450H2	Multithreading (Hard Version) combinatorics, implementation, math	3300	x162
1641E	Special Positions combinatorics, divide and conquer, fft, math	3300	x202
1750G	Doping combinatorics, dp, math	3300	x223
1188E	Problem from Red Panda combinatorics	3300	x224
1466H	Finding satisfactory solutions combinatorics, dp, graphs, greedy, math	3300	x257
1254E	Send Tree to Charlie combinatorics, dfs and similar, dsu, trees	3300	x259
1528F	AmShZ Farm combinatorics, fft, math	3300	x272
1726G	A Certain Magical Party combinatorics, data structures, greedy, sortings	3300	x282
878E	Numbers on the blackboard combinatorics, dp	3300	x471
623E	Transforming Sequence combinatorics, dp, fft, math	3300	x526
1403C	Chess Rush *special problem, combinatorics, dp, implementation, math	3200	x42
756E	Byteland coins combinatorics, dp, math	3200	x150
1704H1	Game of AI (easy version) combinatorics, constructive algorithms, dp, fft, math	3200	x170
1470E	Strange Permutation binary search, combinatorics, data structures, dp, graphs, implementation, two pointers	3200	x290
1774G	Segment Covering brute force, combinatorics, constructive algorithms, data structures, dp, trees	3200	x361
1603E	A Perfect Problem combinatorics, dp, math	3200	x398
1517F	Reunion combinatorics, dp, trees	3200	x435
750G	New Year and Binary Tree Paths bitmasks, brute force, combinatorics, dp	3200	x439
1608F	MEX counting combinatorics, dp, implementation	3200	x515
755G	PolandBall and Many Other Balls combinatorics, divide and conquer, dp, fft, math, number theory	3200	x850
1954F	Unique Strings combinatorics, dp, math	3100	x174
1951G	Clacking Balls combinatorics, math, probabilities	3100	x219
1864G	Magic Square combinatorics, constructive algorithms, implementation	3100	x251
1205E	Expected Value Again combinatorics, strings	3100	x262
981H	K Paths combinatorics, data structures, dp, fft, math	3100	x264
1784E	Infinite Game brute force, combinatorics, dp, games, probabilities	3100	x297
1439D	INOI Final Contests combinatorics, dp, fft	3100	x337
1924E	Paper Cutting Again combinatorics, probabilities	3100	x382
653G	Move by Prime combinatorics, math, number theory	3100	x513
1503E	2-Coloring combinatorics, dp, math	3100	x591
1770F	Koxia and Sequence bitmasks, combinatorics, dp, math, number theory	3100	x597
438E	The Child and Binary Tree combinatorics, divide and conquer, fft, number theory	3100	x1779
372E	Drawing Circles is Fun combinatorics, geometry	3000	x169
1743G	Antifibonacci Cut bitmasks, combinatorics, constructive algorithms, data structures, dp, hashing, math	3000	x244
135E	Weak Subsequence combinatorics	3000	x263
1299D	Around the World bitmasks, combinatorics, dfs and similar, dp, graphs, graphs, math, trees	3000	x414
698F	Coprime Permutation combinatorics, number theory	3000	x428
1707D	Partial Virtual Trees combinatorics, dfs and similar, dp, math, trees	3000	x577
1667E	Centroid Probabilities combinatorics, dp, fft, math	3000	x620
1097G	Vladislav and a Great Legend combinatorics, dp, trees	3000	x657
1392H	ZS Shuffles Cards combinatorics, dp, math, probabilities	3000	x667
506E	Mr. Kitayuta's Gift combinatorics, dp, matrices, strings	3000	x679
1616H	Keep XOR Low bitmasks, combinatorics, data structures, divide and conquer, dp, math	3000	x778
891E	Lust combinatorics, math, matrices	3000	x840
1810H	Last Number combinatorics, math	2900	x129
1928F	Digital Patterns combinatorics, data structures, implementation, math	2900	x205
145D	Lucky Pair combinatorics, data structures, implementation	2900	x237
217D	Bitonix' Patrol bitmasks, brute force, combinatorics, dfs and similar, math	2900	x245
933D	A Creative Cutout brute force, combinatorics, math	2900	x280
1605F	PalindORme combinatorics, dp	2900	x284
1644F	Basis combinatorics, fft, math, number theory	2900	x310
1847E	Triangle Platinum? brute force, combinatorics, implementation, interactive, math, probabilities	2900	x312
776G	Sherlock and the Encrypted Data bitmasks, combinatorics, dp	2900	x327
717A	Festival Organization combinatorics, math, number theory	2900	x332
848D	Shake It! combinatorics, dp, flows, graphs	2900	x365
917C	Pollywog combinatorics, dp, matrices	2900	x370
1792F2	Graph Coloring (hard version) brute force, combinatorics, divide and conquer, dp, fft, graphs	2900	x372
1450H1	Multithreading (Easy Version) combinatorics, fft, math	2900	x373
1630E	Expected Components combinatorics, math, number theory, probabilities	2900	x419
997D	Cycles in product combinatorics, divide and conquer, trees	2900	x424
1747E	List Generation combinatorics, dp, math	2900	x482
1528E	Mashtali and Hagh Trees combinatorics, dp, trees	2900	x502
1713F	Lost Array bitmasks, combinatorics, constructive algorithms, dp, math	2900	x505
1085G	Beautiful Matrix combinatorics, data structures, dp	2900	x506
896D	Nephren Runs a Cinema chinese remainder theorem, combinatorics, math, number theory	2900	x516
1221G	Graph And Numbers bitmasks, brute force, combinatorics, dp, meet-in-the-middle	2900	x518
1060F	Shrinking Tree combinatorics, dp	2900	x525
722E	Research Rover combinatorics, dp	2900	x798
1264D2	Beautiful Bracket Sequence (hard version) combinatorics, probabilities	2900	x846
960G	Bandit Blues combinatorics, dp, fft, math	2900	x1022
585E	Present for Vitalik the Philatelist combinatorics, math, number theory	2900	x1040
1285F	Classical? binary search, combinatorics, number theory	2900	x1060
1488H	Build From Suffixes *special problem, combinatorics, data structures	2800	x52
1725I	Imitating the Key Tree combinatorics, dsu, trees	2800	x183
1773G	Game of Questions bitmasks, combinatorics, dp, fft, math, probabilities	2800	x318
1942G	Bessie and Cards combinatorics, dp, math	2800	x343
762F	Tree nesting combinatorics, graphs, trees	2800	x345

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