Problemset - Codeforces

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Educational Codeforces Round 150 (Rated for Div. 2)
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combinatorics

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Problems

#	Name
1704H2	Game of AI (hard version) combinatorics, fft, math	3500	x60
1761F2	Anti-median (Hard Version) combinatorics, dp, math	3500	x61
1654H	Three Minimums combinatorics, constructive algorithms, divide and conquer, dp, fft, math	3500	x61
1696H	Maximum Product? brute force, combinatorics, dp, greedy, implementation, math, two pointers	3500	x96
1477F	Nezzar and Chocolate Bars combinatorics, fft, math, probabilities	3500	x100
1586I	Omkar and Mosaic combinatorics, constructive algorithms, math	3500	x101
1687E	Become Big For Me combinatorics, constructive algorithms, greedy, math, number theory	3500	x179
1292F	Nora's Toy Boxes bitmasks, combinatorics, dp	3500	x245
1336E2	Chiori and Doll Picking (hard version) bitmasks, brute force, combinatorics, math	3500	x248
1280F	Intergalactic Sliding Puzzle combinatorics, constructive algorithms, math	3400	x49
804F	Fake bullions combinatorics, dfs and similar, dp, graphs, number theory	3400	x124
1553I	Stairs combinatorics, divide and conquer, dp, fft, math	3400	x155
773F	Test Data Generation combinatorics, divide and conquer, dp, fft, math, number theory	3400	x155
914H	Ember and Storm's Tree Game combinatorics, dp, games, trees	3400	x183
848E	Days of Floral Colours combinatorics, divide and conquer, dp, fft, math	3400	x183
715E	Complete the Permutations combinatorics, fft, graphs, math	3400	x291
794G	Replace All combinatorics, dp, math	3400	x292
1450H2	Multithreading (Hard Version) combinatorics, implementation, math	3300	x98
1580F	Problems for Codeforces combinatorics, fft, math	3300	x110
865G	Flowers and Chocolate combinatorics, math, matrices	3300	x120
1750G	Doping combinatorics, dp, math	3300	x134
1641E	Special Positions combinatorics, divide and conquer, fft, math	3300	x176
1466H	Finding satisfactory solutions combinatorics, dp, graphs, greedy, math	3300	x180
1726G	A Certain Magical Party combinatorics, data structures, greedy, sortings	3300	x193
1188E	Problem from Red Panda combinatorics	3300	x196
1528F	AmShZ Farm combinatorics, fft, math	3300	x226
1254E	Send Tree to Charlie combinatorics, dfs and similar, dsu, trees	3300	x226
878E	Numbers on the blackboard combinatorics, dp	3300	x390
623E	Transforming Sequence combinatorics, dp, fft, math	3300	x481
1403C	Chess Rush *special problem, combinatorics, dp, implementation, math	3200	x38
756E	Byteland coins combinatorics, dp, math	3200	x126
1704H1	Game of AI (easy version) combinatorics, constructive algorithms, dp, fft, math	3200	x142
1603E	A Perfect Problem combinatorics, dp, math	3200	x222
1774G	Segment Covering brute force, combinatorics, constructive algorithms, data structures, dp, trees	3200	x236
1470E	Strange Permutation binary search, combinatorics, data structures, dp, graphs, implementation, two pointers	3200	x242
1608F	MEX counting combinatorics, dp, implementation	3200	x293
750G	New Year and Binary Tree Paths bitmasks, brute force, combinatorics, dp	3200	x303
1517F	Reunion combinatorics, dp, trees	3200	x322
755G	PolandBall and Many Other Balls combinatorics, divide and conquer, dp, fft, math, number theory	3200	x730
1205E	Expected Value Again combinatorics, strings	3100	x197
1784E	Infinite Game brute force, combinatorics, dp, games, probabilities	3100	x208
981H	K Paths combinatorics, data structures, dp, fft, math	3100	x222
1439D	INOI Final Contests combinatorics, dp, fft	3100	x282
653G	Move by Prime combinatorics, math, number theory	3100	x396
1770F	Koxia and Sequence bitmasks, combinatorics, dp, math, number theory	3100	x412
1503E	2-Coloring combinatorics, dp, math	3100	x446
438E	The Child and Binary Tree combinatorics, divide and conquer, fft, number theory	3100	x1563
372E	Drawing Circles is Fun combinatorics, geometry	3000	x155
1743G	Antifibonacci Cut bitmasks, combinatorics, constructive algorithms, data structures, dp, hashing, math	3000	x200
135E	Weak Subsequence combinatorics	3000	x237
698F	Coprime Permutation combinatorics, number theory	3000	x307
1299D	Around the World bitmasks, combinatorics, dfs and similar, dp, graphs, graphs, math, trees	3000	x368
1667E	Centroid Probabilities combinatorics, dp, fft, math	3000	x411
1707D	Partial Virtual Trees combinatorics, dfs and similar, dp, math, trees	3000	x458
1392H	ZS Shuffles Cards combinatorics, dp, math, probabilities	3000	x482
1097G	Vladislav and a Great Legend combinatorics, dp, trees	3000	x513
1616H	Keep XOR Low bitmasks, combinatorics, data structures, divide and conquer, dp, math	3000	x551
506E	Mr. Kitayuta's Gift combinatorics, dp, matrices, strings	3000	x582
891E	Lust combinatorics, math, matrices	3000	x732
1810H	Last Number combinatorics, math	2900	x83
145D	Lucky Pair combinatorics, data structures, implementation	2900	x217
217D	Bitonix' Patrol bitmasks, brute force, combinatorics, dfs and similar, math	2900	x230
933D	A Creative Cutout brute force, combinatorics, math	2900	x233
1605F	PalindORme combinatorics, dp	2900	x240
717A	Festival Organization combinatorics, math, number theory	2900	x279
1644F	Basis combinatorics, fft, math, number theory	2900	x287
1792F2	Graph Coloring (hard version) brute force, combinatorics, divide and conquer, dp, fft, graphs	2900	x298
848D	Shake It! combinatorics, dp, flows, graphs	2900	x298
776G	Sherlock and the Encrypted Data bitmasks, combinatorics, dp	2900	x299
1450H1	Multithreading (Easy Version) combinatorics, fft, math	2900	x308
917C	Pollywog combinatorics, dp, matrices	2900	x312
1630E	Expected Components combinatorics, math, number theory, probabilities	2900	x348
997D	Cycles in product combinatorics, divide and conquer, trees	2900	x385
1085G	Beautiful Matrix combinatorics, data structures, dp	2900	x399
896D	Nephren Runs a Cinema chinese remainder theorem, combinatorics, math, number theory	2900	x399
1713F	Lost Array bitmasks, combinatorics, constructive algorithms, dp, math	2900	x407
1221G	Graph And Numbers bitmasks, brute force, combinatorics, dp, meet-in-the-middle	2900	x412
1747E	List Generation combinatorics, dp, math	2900	x416
1528E	Mashtali and Hagh Trees combinatorics, dp, trees	2900	x428
1060F	Shrinking Tree combinatorics, dp	2900	x444
1264D2	Beautiful Bracket Sequence (hard version) combinatorics, probabilities	2900	x583
722E	Research Rover combinatorics, dp	2900	x715
585E	Present for Vitalik the Philatelist combinatorics, math, number theory	2900	x885
1285F	Classical? binary search, combinatorics, number theory	2900	x892
960G	Bandit Blues combinatorics, dp, fft, math	2900	x900
1488H	Build From Suffixes *special problem, combinatorics, data structures	2800	x42
1725I	Imitating the Key Tree combinatorics, dsu, trees	2800	x148
1773G	Game of Questions bitmasks, combinatorics, dp, fft, math, probabilities	2800	x215
1809G	Prediction combinatorics, dp, math	2800	x266
1808E3	Minibuses on Venus (hard version) brute force, combinatorics, dp, math	2800	x277
762F	Tree nesting combinatorics, graphs, trees	2800	x291
1473G	Tiles combinatorics, dp, fft, math	2800	x328
559D	Randomizer combinatorics, geometry, probabilities	2800	x349
1436F	Sum Over Subsets combinatorics, math, number theory	2800	x438
815D	Karen and Cards binary search, combinatorics, data structures, geometry	2800	x491
1545C	AquaMoon and Permutations 2-sat, brute force, combinatorics, constructive algorithms, graph matchings, graphs	2800	x499
1626F	A Random Code Problem combinatorics, dp, math, number theory, probabilities	2800	x566
283E	Cow Tennis Tournament combinatorics, data structures, math	2800	x583
1615F	LEGOndary Grandmaster combinatorics, dp, math	2800	x598
325E	The Red Button combinatorics, dfs and similar, dsu, graphs, greedy	2800	x632

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