Problemset - Codeforces

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Codeforces Round 950 (Div. 3)
27:10:35
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combinatorics

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Problems

#	Name
1073E	Segment Sum bitmasks, combinatorics, dp, math	2300	x2416
1065E	Side Transmutations combinatorics, strings	2300	x1029
1060F	Shrinking Tree combinatorics, dp	2900	x545
1043F	Make It One bitmasks, combinatorics, dp, math, number theory, shortest paths	2500	x2201
1043D	Mysterious Crime brute force, combinatorics, math, meet-in-the-middle, two pointers	1700	x4378
1037F	Maximum Reduction combinatorics, data structures, math	2500	x935
1036F	Relatively Prime Powers combinatorics, math, number theory	2400	x1416
1036C	Classy Numbers combinatorics, dp	1900	x8708
1034C	Region Separation combinatorics, dp, number theory, trees	2700	x856
1028D	Order book combinatorics, data structures, greedy	2100	x1715
1027E	Inverse Coloring combinatorics, dp, math	2100	x1915
1009E	Intercity Travelling combinatorics, math, probabilities	2000	x2895
1007B	Pave the Parallelepiped bitmasks, brute force, combinatorics, math, number theory	2400	x942
1007A	Reorder the Array combinatorics, data structures, math, sortings, two pointers	1300	x12010
1000D	Yet Another Problem On a Subsequence combinatorics, dp	1900	x4005
997D	Cycles in product combinatorics, divide and conquer, trees	2900	x426
997C	Sky Full of Stars combinatorics, math	2500	x1648
997B	Roman Digits brute force, combinatorics, dp, greedy, math	2000	x2870
995F	Cowmpany Cowmpensation combinatorics, dp, math, trees	2700	x1156
991E	Bus Number brute force, combinatorics, math	1800	x3418
986B	Petr and Permutations combinatorics, math	1800	x4565
985G	Team Players combinatorics	2700	x463
981H	K Paths combinatorics, data structures, dp, fft, math	3100	x266
978E	Bus Video System combinatorics, math	1400	x9283
961G	Partitions combinatorics, math, number theory	2700	x1309
960G	Bandit Blues combinatorics, dp, fft, math	2900	x1040
960E	Alternating Tree combinatorics, dfs and similar, divide and conquer, dp, probabilities, trees	2300	x1830
954H	Path Counting combinatorics, dp	2500	x562
946F	Fibonacci String Subsequences combinatorics, dp, matrices	2400	x532
938E	Max History combinatorics, math	2300	x1234
933D	A Creative Cutout brute force, combinatorics, math	2900	x281
932E	Team Work combinatorics, dp, math	2400	x2723
929C	Красивая команда *special problem, combinatorics, math	1700	x1143
920G	List Of Integers binary search, bitmasks, brute force, combinatorics, math, number theory	2200	x1685
917C	Pollywog combinatorics, dp, matrices	2900	x385
914H	Ember and Storm's Tree Game combinatorics, dp, games, trees	3400	x233
914C	Travelling Salesman and Special Numbers brute force, combinatorics, dp	1800	x3657
908E	New Year and Entity Enumeration bitmasks, combinatorics, dp, math	2500	x736
900D	Unusual Sequences bitmasks, combinatorics, dp, math, number theory	2000	x3015
896D	Nephren Runs a Cinema chinese remainder theorem, combinatorics, math, number theory	2900	x519
895D	String Mark combinatorics, math, strings	2100	x1089
895C	Square Subsets bitmasks, combinatorics, dp, math	2000	x5163
894B	Ralph And His Magic Field combinatorics, constructive algorithms, math, number theory	1800	x4389
893E	Counting Arrays combinatorics, dp, math, number theory	2000	x3289
891E	Lust combinatorics, math, matrices	3000	x867
888D	Almost Identity Permutations combinatorics, dp, math	1600	x7742
886E	Maximum Element combinatorics, dp, math	2400	x980
878E	Numbers on the blackboard combinatorics, dp	3300	x484
875D	High Cry binary search, bitmasks, combinatorics, data structures, divide and conquer	2200	x1999
869C	The Intriguing Obsession combinatorics, dp, math	1800	x4418
865G	Flowers and Chocolate combinatorics, math, matrices	3300	x134
859E	Desk Disorder combinatorics, dfs and similar, dsu, graphs, trees	2100	x1649
856C	Eleventh Birthday combinatorics, dp, math	2400	x536
852F	Product transformation combinatorics, math, number theory	2200	x561
848E	Days of Floral Colours combinatorics, divide and conquer, dp, fft, math	3400	x202
848D	Shake It! combinatorics, dp, flows, graphs	2900	x368
844B	Rectangles combinatorics, math	1300	x7075
840C	On the Bench combinatorics, dp	2500	x1656
840A	Leha and Function combinatorics, greedy, math, number theory, sortings	1300	x6961
839D	Winter is here combinatorics, dp, math, number theory	2200	x2700
837F	Prefix Sums binary search, brute force, combinatorics, math, matrices	2400	x744
833C	Ever-Hungry Krakozyabra brute force, combinatorics, greedy, math	2700	x461
830D	Singer House combinatorics, dp, graphs, trees	2800	x810
817B	Makes And The Product combinatorics, implementation, math, sortings	1500	x5576
815D	Karen and Cards binary search, combinatorics, data structures, geometry	2800	x598
815B	Karen and Test brute force, combinatorics, constructive algorithms, math	2200	x1364
814E	An unavoidable detour for home combinatorics, dp, graphs, shortest paths	2600	x641
809C	Find a car combinatorics, divide and conquer, dp	2600	x733
804F	Fake bullions combinatorics, dfs and similar, dp, graphs, number theory	3400	x138
804B	Minimum number of steps combinatorics, greedy, implementation, math	1400	x9533
803F	Coprime Subsequences bitmasks, combinatorics, number theory	2000	x3049
794G	Replace All combinatorics, dp, math	3400	x324
788B	Weird journey combinatorics, constructive algorithms, dfs and similar, dsu, graphs	2100	x2299
785D	Anton and School - 2 combinatorics, dp, math, number theory	2300	x2659
776G	Sherlock and the Encrypted Data bitmasks, combinatorics, dp	2900	x334
773F	Test Data Generation combinatorics, divide and conquer, dp, fft, math, number theory	3400	x185
768F	Barrels and boxes brute force, combinatorics, math, number theory, probabilities	2300	x1001
762F	Tree nesting combinatorics, graphs, trees	2800	x346
757E	Bash Plays with Functions brute force, combinatorics, dp, number theory	2500	x1269
756E	Byteland coins combinatorics, dp, math	3200	x154
756D	Bacterial Melee brute force, combinatorics, dp, string suffix structures	2400	x982
755G	PolandBall and Many Other Balls combinatorics, divide and conquer, dp, fft, math, number theory	3200	x869
750G	New Year and Binary Tree Paths bitmasks, brute force, combinatorics, dp	3200	x442
747F	Igor and Interesting Numbers brute force, combinatorics, dp, math	2500	x413
735C	Tennis Championship combinatorics, constructive algorithms, greedy, math	1600	x7355
724F	Uniformly Branched Trees combinatorics, dp, trees	2700	x392
722E	Research Rover combinatorics, dp	2900	x802
717A	Festival Organization combinatorics, math, number theory	2900	x336
715E	Complete the Permutations combinatorics, fft, graphs, math	3400	x347
712D	Memory and Scores combinatorics, dp, math	2200	x1661
711D	Directed Roads combinatorics, dfs and similar, graphs, math	1900	x4370
698F	Coprime Permutation combinatorics, number theory	3000	x432
696C	PLEASE combinatorics, dp, implementation, math, matrices	2000	x2054
690D2	The Wall (medium) combinatorics	1800	x1211
689E	Mike and Geometry Problem combinatorics, data structures, dp, geometry, implementation	2000	x1812
689C	Mike and Chocolate Thieves binary search, combinatorics, math	1700	x4943
685A	Robbers' watch brute force, combinatorics, dp, math	1700	x4149
677C	Vanya and Label bitmasks, combinatorics, implementation, strings	1500	x6296
666C	Codeword combinatorics, strings	2500	x768
660E	Different Subsets For All Tuples combinatorics, math	2300	x1246