Problemset - Codeforces

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Codeforces Round 974 (Div. 3)
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Problems

#	Name
926H	Endless Roses Most Beautiful	2200	x214
926F	Mobile Communications	2000	x227
926E	Merge Equal Elements constructive algorithms, data structures	1900	x926
926D	Choose Place	1600	x911
926C	Is This a Zebra? implementation	1700	x1881
926B	Add Points math, number theory	1800	x1664
925F	Parametric Circulation binary search, flows	3100	x112
925E	May Holidays data structures, trees	2900	x392
925D	Aztec Catacombs constructive algorithms	2600	x520
925C	Big Secret constructive algorithms, math	2200	x1304
925B	Resource Distribution binary search, implementation, sortings	1700	x2201
925A	Stairs and Elevators binary search	1600	x3452
924F	Minimal Subset Difference dp	3200	x207
924E	Wardrobe dp, greedy	2700	x516
924D	Contact ATC	2500	x861
924C	Riverside Curio data structures, dp, greedy	1700	x3824
924B	Three-level Laser binary search, greedy, two pointers	1600	x5264
923F	Public Service constructive algorithms, graphs, trees	3200	x75
923E	Perpetual Subtraction fft, math, matrices	3100	x452
923D	Picking Strings constructive algorithms, implementation, strings	2500	x1193
923C	Perfect Security data structures, greedy, strings, trees	1800	x4264
923B	Producing Snow binary search, data structures	1600	x7296
923A	Primal Sport math, number theory	1700	x5018
922F	Divisibility constructive algorithms, dp, greedy, number theory	2400	x640
922E	Birds dp	2200	x2109
922D	Robot Vacuum Cleaner greedy, sortings	1800	x4350
922C	Cave Painting brute force, number theory	1600	x7016
92114	Labyrinth-14	3200
92113	Labyrinth-13	3200
92112	Labyrinth-12	3200
92111	Labyrinth-11	3200
92110	Labyrinth-10	3200
92109	Labyrinth-9	3200
92108	Labyrinth-8	3200
92107	Labyrinth-7	3200
92106	Labyrinth-6	3200
92105	Labyrinth-5	3200
92104	Labyrinth-4	3200
92103	Labyrinth-3	3200
92102	Labyrinth-2	3200
92101	Labyrinth-1	3200
920G	List Of Integers binary search, bitmasks, brute force, combinatorics, math, number theory	2200	x1741
920F	SUM and REPLACE brute force, data structures, dsu, number theory	2000	x6678
920E	Connected Components? data structures, dfs and similar, dsu, graphs	2100	x6289
920D	Tanks dp, greedy, implementation	2400	x708
919F	A Game With Numbers games, graphs, shortest paths	2600	x335
919E	Congruence Equation chinese remainder theorem, math, number theory	2100	x2097
919D	Substring dfs and similar, dp, graphs	1700	x9868
917E	Upside Down data structures, string suffix structures, strings, trees	3400	x133
917D	Stranger Trees dp, math, matrices, trees	2600	x1135
917C	Pollywog combinatorics, dp, matrices	2900	x390
917B	MADMAX dfs and similar, dp, games, graphs	1700	x3527
917A	The Monster dp, greedy, implementation, math	1800	x3508
916E	Jamie and Tree data structures, trees	2400	x1651
916D	Jamie and To-do List data structures, interactive, trees	2200	x509
916C	Jamie and Interesting Graph constructive algorithms, graphs, shortest paths	1600	x5085
916B	Jamie and Binary Sequence (changed after round) bitmasks, greedy, math	2000	x1900
915G	Coprime Arrays math, number theory	2300	x1218
915F	Imbalance Value of a Tree data structures, dsu, graphs, trees	2400	x2451
915E	Physical Education Lessons data structures, implementation, sortings	2300	x4321
915D	Almost Acyclic Graph dfs and similar, graphs	2200	x3414
915C	Permute Digits dp, greedy	1700	x7009
914H	Ember and Storm's Tree Game combinatorics, dp, games, trees	3400	x237
914G	Sum the Fibonacci bitmasks, divide and conquer, dp, fft, math	2600	x925
914F	Substrings in a String bitmasks, brute force, data structures, string suffix structures, strings	3000	x1622
914E	Palindromes in a Tree bitmasks, data structures, divide and conquer, trees	2400	x1483
914D	Bash and a Tough Math Puzzle data structures, number theory	1900	x5264
914C	Travelling Salesman and Special Numbers brute force, combinatorics, dp	1800	x3734
913H	Don't Exceed math, probabilities	3400	x124
913G	Power Substring math, number theory	3200	x203
913F	Strongly Connected Tournament dp, graphs, math, probabilities	2800	x651
913E	Logical Expression bitmasks, dp, shortest paths	2400	x770
913D	Too Easy Problems binary search, brute force, data structures, greedy, sortings	1800	x4725
913C	Party Lemonade bitmasks, dp, greedy	1600	x7866
912E	Prime Gift binary search, dfs and similar, math, meet-in-the-middle, number theory, two pointers	2400	x1576
912D	Fishes data structures, graphs, greedy, probabilities, shortest paths	2100	x2007
912C	Perun, Ult! brute force, greedy, sortings	2500	x517
911G	Mass Change Queries data structures	2500	x2866
911F	Tree Destruction constructive algorithms, dfs and similar, graphs, greedy, trees	2400	x1681
911E	Stack Sorting constructive algorithms, data structures, greedy, implementation	2000	x2526
911D	Inversion Counting brute force, math	1800	x4584
910C	Minimum Sum constructive algorithms, greedy, math	1700	x1797
910B	Door Frames greedy, implementation	1600	x1698
909F	AND-permutations constructive algorithms	2500	x575
909E	Coprocessor dfs and similar, dp, graphs, greedy	1900	x2064
909D	Colorful Points data structures, greedy, implementation	2100	x1931
909C	Python Indentation dp	1800	x4888
908H	New Year and Boolean Bridges	3100	x378
908G	New Year and Original Order dp, math	2800	x1352
908F	New Year and Rainbow Roads graphs, greedy, implementation	2400	x1390
908E	New Year and Entity Enumeration bitmasks, combinatorics, dp, math	2500	x758
908D	New Year and Arbitrary Arrangement dp, math, probabilities	2200	x2324
906E	Reverses dp, string suffix structures, strings	3300	x446
906D	Power Tower chinese remainder theorem, math, number theory	2700	x2097
906C	Party bitmasks, brute force, dp, graphs	2400	x1333
906B	Seating of Students brute force, constructive algorithms, math	2200	x1136
906A	Shockers implementation, strings	1600	x4119
903G	Yet Another Maxflow Problem data structures, flows, graphs	2700	x529
903F	Clear The Matrix bitmasks, dp	2200	x636
903E	Swapping Characters brute force, hashing, implementation, strings	2200	x1462