Problemset - Codeforces

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Educational Codeforces Round 81 (Rated for Div. 2)
42:25:33
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Problems

#	Name
717I	Cowboy Beblop at his computer geometry	3800	x137
1237G	Balanced Distribution data structures, dp, greedy	3600	x34
1148H	Holy Diver data structures	3600	x34
1264F	Beautiful Fibonacci Problem constructive algorithms, number theory	3600	x52
1208H	Red Blue Tree data structures, implementation, trees	3500	x32
1178H	Stock Exchange binary search, flows, graphs	3500	x32
1267H	Help BerLine constructive algorithms	3500	x37
1081H	Palindromic Magic data structures, hashing, strings	3500	x41
1078E	Negative Time Summation constructive algorithms	3500	x46
1098F	Ж-function string suffix structures, strings	3500	x49
1071E	Rain Protection binary search, geometry	3500	x51
1043G	Speckled Band data structures, divide and conquer, hashing, string suffix structures, strings	3500	x52
1007E	Mini Metro dp	3500	x52
1045F	Shady Lady geometry, math	3500	x58
1089H	Harder Satisfiability 2-sat, dfs and similar, graphs	3500	x59
1292E	Rin and The Unknown Flower constructive algorithms, greedy, interactive, math	3500	x60
1053E	Euler tour constructive algorithms, trees	3500	x86
1110H	Modest Substrings dp, strings	3500	x99
1034D	Intervals of Intervals binary search, data structures, two pointers	3500	x104
1089B	Bimatching graphs	3500	x108
704E	Iron Man data structures, geometry, trees	3500	x114
1266H	Red-Blue Graph dp, graphs, math, matrices, meet-in-the-middle	3400	x13
1276E	Four Stones constructive algorithms	3400	x19
1292F	Nora's Toy Boxes bitmasks, combinatorics, dp	3400	x25
1210G	Mateusz and Escape Room dp	3400	x25
1280F	Intergalactic Sliding Puzzle combinatorics, constructive algorithms, math	3400	x26
853E	Lada Malina data structures, geometry	3400	x34
1205F	Beauty of a Permutation constructive algorithms, math	3400	x35
924F	Minimal Subset Difference dp	3400	x38
1246F	Cursor Distance	3400	x44
1086F	Forest Fires math	3400	x46
1239F	Swiper, no swiping! graphs, implementation	3400	x48
1270I	Xor on Figures constructive algorithms, fft, math	3400	x49
1268E	Happy Cactus dp	3400	x54
1089D	Distance Sum graphs	3400	x54
1054H	Epic Convolution chinese remainder theorem, fft, math, number theory	3400	x57
750H	New Year and Snowy Grid dfs and similar, dsu, graphs, interactive	3400	x57
913H	Don't Exceed math, probabilities	3400	x58
1147F	Zigzag Game games, interactive	3400	x61
773F	Test Data Generation combinatorics, divide and conquer, dp, fft, math, number theory	3400	x61
848E	Days of Floral Colours combinatorics, divide and conquer, dp, fft, math	3400	x62
1242D	Number Discovery math	3400	x69
804F	Fake bullions combinatorics, dfs and similar, dp, graphs, number theory	3400	x69
1098E	Fedya the Potter binary search, implementation, math, number theory	3400	x70
1083D	The Fair Nut's getting crazy data structures, implementation	3400	x70
1010F	Tree fft, graphs, trees	3400	x71
1158F	Density of subarrays dp, math	3400	x75
739D	Recover a functional graph graph matchings	3400	x78
627F	Island Puzzle dfs and similar, dsu, graphs, trees	3400	x79
1039E	Summer Oenothera Exhibition data structures	3400	x84
715E	Complete the Permutations combinatorics, fft, graphs, math	3400	x110
794G	Replace All combinatorics, dp, math	3400	x116
718E	Matvey's Birthday bitmasks, graphs	3400	x140
578F	Mirror Box matrices, trees	3400	x148
1267C	Cactus Revenge constructive algorithms	3400	x324
1266G	Permutation Concatenation string suffix structures	3300	x16
1218G	Alpha planetary system constructive algorithms, graphs, shortest paths	3300	x18
1184D2	Parallel Universes (Hard) math, matrices	3300	x20
865F	Egg Roulette bitmasks, brute force, divide and conquer, math, meet-in-the-middle	3300	x28
1023G	Pisces data structures, flows, trees	3300	x32
901E	Cyclic Cipher fft, math	3300	x34
1284G	Seollal graphs	3300	x35
1190F	Tokitsukaze and Powers number theory, probabilities	3300	x35
1060G	Balls and Pockets data structures	3300	x36
737F	Dirty plates constructive algorithms, math	3300	x36
1276F	Asterisk Substrings string suffix structures	3300	x38
737E	Tanya is 5! graph matchings, graphs, greedy, schedules	3300	x38
730L	Expression Queries	3300	x39
1017H	The Films brute force	3300	x40
868G	El Toll Caves math	3300	x41
1158E	Strange device binary search, interactive, math, trees	3300	x43
925F	Parametric Circulation binary search, flows	3300	x47
786D	Rap God data structures, dfs and similar, hashing, strings, trees	3300	x49
1209H	Moving Walkways data structures, greedy, math	3300	x50
730K	Roads Orientation Problem	3300	x50
641G	Little Artem and Graph	3300	x55
1172F	Nauuo and Bug data structures	3300	x61
725G	Messages on a Tree	3300	x67
1089J	JS Minification greedy, implementation	3300	x74
1103E	Radix sum fft, math, number theory	3300	x78
618G	Combining Slimes dp, math, matrices, probabilities	3300	x84
1172E	Nauuo and ODT data structures	3300	x86
741E	Arpa’s abnormal DNA and Mehrdad’s deep interest data structures, string suffix structures	3300	x86
671E	Organizing a Race data structures, greedy	3300	x92
936E	Iqea data structures, dfs and similar, divide and conquer, dsu, shortest paths, trees	3300	x99
607E	Cross Sum binary search, geometry	3300	x120
983D	Arkady and Rectangles data structures	3300	x124
799F	Beautiful fountains rows data structures	3300	x125
639F	Bear and Chemistry data structures, dfs and similar, graphs, trees	3300	x137
526G	Spiders Evil Plan greedy, trees	3300	x152
1137F	Matches Are Not a Child's Play data structures, trees	3300	x180
623E	Transforming Sequence combinatorics, dp, fft, math	3300	x213
553E	Kyoya and Train dp, fft, graphs, math, probabilities	3300	x232
700E	Cool Slogans string suffix structures, strings	3300	x414
92114	Labyrinth-14	3200
92113	Labyrinth-13	3200
92112	Labyrinth-12	3200
92111	Labyrinth-11	3200
92110	Labyrinth-10	3200
92109	Labyrinth-9	3200

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