Problemset - Codeforces

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Codeforces Round 940 (Div. 2) and CodeCraft-23
27:23:02
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combinatorics

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Problems

#	Name
1027E	Inverse Coloring combinatorics, dp, math	2100	x1857
1009E	Intercity Travelling combinatorics, math, probabilities	2000	x2881
1007B	Pave the Parallelepiped bitmasks, brute force, combinatorics, math, number theory	2400	x920
1007A	Reorder the Array combinatorics, data structures, math, sortings, two pointers	1300	x11967
1000D	Yet Another Problem On a Subsequence combinatorics, dp	1900	x3938
997D	Cycles in product combinatorics, divide and conquer, trees	2900	x423
997C	Sky Full of Stars combinatorics, math	2500	x1626
997B	Roman Digits brute force, combinatorics, dp, greedy, math	2000	x2854
995F	Cowmpany Cowmpensation combinatorics, dp, math, trees	2700	x1116
991E	Bus Number brute force, combinatorics, math	1800	x3396
986B	Petr and Permutations combinatorics, math	1800	x4552
985G	Team Players combinatorics	2700	x450
981H	K Paths combinatorics, data structures, dp, fft, math	3100	x262
978E	Bus Video System combinatorics, math	1400	x9190
961G	Partitions combinatorics, math, number theory	2700	x1282
960G	Bandit Blues combinatorics, dp, fft, math	2900	x1021
960E	Alternating Tree combinatorics, dfs and similar, divide and conquer, dp, probabilities, trees	2300	x1804
954H	Path Counting combinatorics, dp	2500	x550
946F	Fibonacci String Subsequences combinatorics, dp, matrices	2400	x527
938E	Max History combinatorics, math	2300	x1222
933D	A Creative Cutout brute force, combinatorics, math	2900	x278
932E	Team Work combinatorics, dp, math	2400	x2665
929C	Красивая команда *special problem, combinatorics, math	1700	x1141
920G	List Of Integers binary search, bitmasks, brute force, combinatorics, math, number theory	2200	x1668
917C	Pollywog combinatorics, dp, matrices	2900	x369
914H	Ember and Storm's Tree Game combinatorics, dp, games, trees	3400	x225
914C	Travelling Salesman and Special Numbers brute force, combinatorics, dp	1800	x3586
908E	New Year and Entity Enumeration bitmasks, combinatorics, dp, math	2500	x732
900D	Unusual Sequences bitmasks, combinatorics, dp, math, number theory	2000	x2964
896D	Nephren Runs a Cinema chinese remainder theorem, combinatorics, math, number theory	2900	x515
895D	String Mark combinatorics, math, strings	2100	x1084
895C	Square Subsets bitmasks, combinatorics, dp, math	2000	x5094
894B	Ralph And His Magic Field combinatorics, constructive algorithms, math, number theory	1800	x4368
893E	Counting Arrays combinatorics, dp, math, number theory	2000	x3236
891E	Lust combinatorics, math, matrices	3000	x837
888D	Almost Identity Permutations combinatorics, dp, math	1600	x7573
886E	Maximum Element combinatorics, dp, math	2400	x971
878E	Numbers on the blackboard combinatorics, dp	3300	x470
875D	High Cry binary search, bitmasks, combinatorics, data structures, divide and conquer	2200	x1965
869C	The Intriguing Obsession combinatorics, dp, math	1800	x4346
865G	Flowers and Chocolate combinatorics, math, matrices	3300	x129
859E	Desk Disorder combinatorics, dfs and similar, dsu, graphs, trees	2100	x1638
856C	Eleventh Birthday combinatorics, dp, math	2400	x521
852F	Product transformation combinatorics, math, number theory	2200	x541
848E	Days of Floral Colours combinatorics, divide and conquer, dp, fft, math	3400	x198
848D	Shake It! combinatorics, dp, flows, graphs	2900	x360
844B	Rectangles combinatorics, math	1300	x6967
840C	On the Bench combinatorics, dp	2500	x1632
840A	Leha and Function combinatorics, greedy, math, number theory, sortings	1300	x6952
839D	Winter is here combinatorics, dp, math, number theory	2200	x2678
837F	Prefix Sums binary search, brute force, combinatorics, math, matrices	2400	x732
833C	Ever-Hungry Krakozyabra brute force, combinatorics, greedy, math	2700	x458
830D	Singer House combinatorics, dp, graphs, trees	2800	x793
817B	Makes And The Product combinatorics, implementation, math, sortings	1500	x5530
815D	Karen and Cards binary search, combinatorics, data structures, geometry	2800	x590
815B	Karen and Test brute force, combinatorics, constructive algorithms, math	2200	x1359
814E	An unavoidable detour for home combinatorics, dp, graphs, shortest paths	2600	x636
809C	Find a car combinatorics, divide and conquer, dp	2600	x724
804F	Fake bullions combinatorics, dfs and similar, dp, graphs, number theory	3400	x136
804B	Minimum number of steps combinatorics, greedy, implementation, math	1400	x9511
803F	Coprime Subsequences bitmasks, combinatorics, number theory	2000	x2978
794G	Replace All combinatorics, dp, math	3400	x318
788B	Weird journey combinatorics, constructive algorithms, dfs and similar, dsu, graphs	2100	x2277
785D	Anton and School - 2 combinatorics, dp, math, number theory	2300	x2631
776G	Sherlock and the Encrypted Data bitmasks, combinatorics, dp	2900	x326
773F	Test Data Generation combinatorics, divide and conquer, dp, fft, math, number theory	3400	x184
768F	Barrels and boxes brute force, combinatorics, math, number theory, probabilities	2300	x997
762F	Tree nesting combinatorics, graphs, trees	2800	x344
757E	Bash Plays with Functions brute force, combinatorics, dp, number theory	2500	x1263
756E	Byteland coins combinatorics, dp, math	3200	x149
756D	Bacterial Melee brute force, combinatorics, dp, string suffix structures	2400	x972
755G	PolandBall and Many Other Balls combinatorics, divide and conquer, dp, fft, math, number theory	3200	x845
750G	New Year and Binary Tree Paths bitmasks, brute force, combinatorics, dp	3200	x438
747F	Igor and Interesting Numbers brute force, combinatorics, dp, math	2500	x408
735C	Tennis Championship combinatorics, constructive algorithms, greedy, math	1600	x7329
724F	Uniformly Branched Trees combinatorics, dp, trees	2700	x386
722E	Research Rover combinatorics, dp	2900	x797
717A	Festival Organization combinatorics, math, number theory	2900	x330
715E	Complete the Permutations combinatorics, fft, graphs, math	3400	x340
712D	Memory and Scores combinatorics, dp, math	2200	x1610
711D	Directed Roads combinatorics, dfs and similar, graphs, math	1900	x4343
698F	Coprime Permutation combinatorics, number theory	3000	x427
696C	PLEASE combinatorics, dp, implementation, math, matrices	2000	x2044
690D2	The Wall (medium) combinatorics	1800	x1207
689E	Mike and Geometry Problem combinatorics, data structures, dp, geometry, implementation	2000	x1802
689C	Mike and Chocolate Thieves binary search, combinatorics, math	1700	x4861
685A	Robbers' watch brute force, combinatorics, dp, math	1700	x4141
677C	Vanya and Label bitmasks, combinatorics, implementation, strings	1500	x6266
666C	Codeword combinatorics, strings	2500	x757
660E	Different Subsets For All Tuples combinatorics, math	2300	x1224
659G	Fence Divercity combinatorics, dp, number theory	2300	x946
653G	Move by Prime combinatorics, math, number theory	3100	x512
652C	Foe Pairs combinatorics, sortings, two pointers	1800	x3065
645F	Cowslip Collections combinatorics, math, number theory	2500	x756
630I	Parking Lot combinatorics, math	1700	x6253
630H	Benches combinatorics, math	1400	x4728
630G	Challenge Pennants combinatorics, math	1600	x2613
630F	Selection of Personnel combinatorics, math	1300	x6538
630C	Lucky Numbers combinatorics, math	1100	x20320
629E	Famil Door and Roads combinatorics, data structures, dfs and similar, dp, probabilities, trees	2300	x965