Problemset - Codeforces

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Educational Codeforces Round 173 (Rated for Div. 2)
00:28:42
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Problems

#	Name
926C	Is This a Zebra? implementation	1700	x1891
926B	Add Points math, number theory	1800	x1749
926A	2-3-numbers implementation, math	1300	x3822
925F	Parametric Circulation binary search, flows	3100	x117
925E	May Holidays data structures, trees	2900	x410
925D	Aztec Catacombs constructive algorithms	2600	x528
925C	Big Secret constructive algorithms, math	2200	x1322
925B	Resource Distribution binary search, implementation, sortings	1700	x2209
925A	Stairs and Elevators binary search	1600	x3547
924F	Minimal Subset Difference dp	3200	x227
924E	Wardrobe dp, greedy	2700	x520
924D	Contact ATC	2500	x875
924C	Riverside Curio data structures, dp, greedy	1700	x3887
924B	Three-level Laser binary search, greedy, two pointers	1600	x5343
924A	Mystical Mosaic greedy, implementation	1300	x5070
923F	Public Service constructive algorithms, graphs, trees	3200	x76
923E	Perpetual Subtraction fft, math, matrices	3100	x462
923D	Picking Strings constructive algorithms, implementation, strings	2500	x1202
923C	Perfect Security data structures, greedy, strings, trees	1800	x4321
923B	Producing Snow binary search, data structures	1600	x7371
923A	Primal Sport math, number theory	1700	x5051
922F	Divisibility constructive algorithms, dp, greedy, number theory	2400	x646
922E	Birds dp	2200	x2171
922D	Robot Vacuum Cleaner greedy, sortings	1800	x4412
922C	Cave Painting brute force, number theory	1600	x7170
922B	Magic Forest brute force	1300	x8575
922A	Cloning Toys implementation	1300	x11753
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	x1769
920F	SUM and REPLACE brute force, data structures, dsu, number theory	2000	x7018
920E	Connected Components? data structures, dfs and similar, dsu, graphs	2100	x6535
920D	Tanks dp, greedy, implementation	2400	x738
920C	Swap Adjacent Elements dfs and similar, greedy, math, sortings, two pointers	1400	x9286
920B	Tea Queue implementation	1200	x7428
920A	Water The Garden implementation	1000	x7827
919F	A Game With Numbers games, graphs, shortest paths	2600	x341
919E	Congruence Equation chinese remainder theorem, math, number theory	2100	x2150
919D	Substring dfs and similar, dp, graphs	1700	x10319
919C	Seat Arrangements brute force, implementation	1300	x9014
919B	Perfect Number binary search, brute force, dp, implementation, number theory	1100	x28576
919A	Supermarket brute force, greedy, implementation	800	x16188
918B	Radio Station implementation, strings	900	x17059
918A	Eleven brute force, implementation	800	x17269
917E	Upside Down data structures, string suffix structures, strings, trees	3400	x137
917D	Stranger Trees dp, math, matrices, trees	2600	x1204
917C	Pollywog combinatorics, dp, matrices	2900	x406
917B	MADMAX dfs and similar, dp, games, graphs	1700	x3559
917A	The Monster dp, greedy, implementation, math	1800	x3531
916E	Jamie and Tree data structures, trees	2400	x1709
916D	Jamie and To-do List data structures, interactive, trees	2200	x519
916C	Jamie and Interesting Graph constructive algorithms, graphs, shortest paths	1600	x5152
916B	Jamie and Binary Sequence (changed after round) bitmasks, greedy, math	2000	x1922
916A	Jamie and Alarm Snooze brute force, implementation, math	900	x8647
915G	Coprime Arrays math, number theory	2300	x1299
915F	Imbalance Value of a Tree data structures, dsu, graphs, trees	2400	x2569
915E	Physical Education Lessons data structures, implementation, sortings	2300	x4540
915D	Almost Acyclic Graph dfs and similar, graphs	2200	x3491
915C	Permute Digits dp, greedy	1700	x7115
915B	Browser implementation	1300	x7828
915A	Garden implementation	900	x14877
914H	Ember and Storm's Tree Game combinatorics, dp, games, trees	3400	x240
914G	Sum the Fibonacci bitmasks, divide and conquer, dp, fft, math	2600	x940
914F	Substrings in a String bitmasks, brute force, data structures, string suffix structures, strings	3000	x1690
914E	Palindromes in a Tree bitmasks, data structures, divide and conquer, trees	2400	x1532
914D	Bash and a Tough Math Puzzle data structures, number theory	1900	x5419
914C	Travelling Salesman and Special Numbers brute force, combinatorics, dp	1800	x3854
914B	Conan and Agasa play a Card Game games, greedy, implementation	1200	x8663
914A	Perfect Squares brute force, implementation, math	900	x14266
913H	Don't Exceed math, probabilities	3400	x128
913G	Power Substring math, number theory	3200	x209
913F	Strongly Connected Tournament dp, graphs, math, probabilities	2800	x663
913E	Logical Expression bitmasks, dp, shortest paths	2400	x811
913D	Too Easy Problems binary search, brute force, data structures, greedy, sortings	1800	x4810
913C	Party Lemonade bitmasks, dp, greedy	1600	x7977
913B	Christmas Spruce implementation, trees	1200	x16321
913A	Modular Exponentiation implementation, math	900	x21501
912E	Prime Gift binary search, dfs and similar, math, meet-in-the-middle, number theory, two pointers	2400	x1652
912D	Fishes data structures, graphs, greedy, probabilities, shortest paths	2100	x2026
912C	Perun, Ult! brute force, greedy, sortings	2500	x520
912B	New Year's Eve bitmasks, constructive algorithms, number theory	1300	x12277
912A	Tricky Alchemy implementation	800	x13570
911G	Mass Change Queries data structures	2500	x2972
911F	Tree Destruction constructive algorithms, dfs and similar, graphs, greedy, trees	2400	x1772
911E	Stack Sorting constructive algorithms, data structures, greedy, implementation	2000	x2574
911D	Inversion Counting brute force, math	1800	x4637
911C	Three Garlands brute force, constructive algorithms	1400	x7072
911B	Two Cakes binary search, brute force, implementation	1200	x11540