Problemset - Codeforces

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Educational Codeforces Round 173 (Rated for Div. 2)
29:14:17
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Problems

#	Name
1083F	The Fair Nut and Amusing Xor data structures	3300	x284
1083E	The Fair Nut and Rectangles data structures, dp, geometry	2400	x4407
1083D	The Fair Nut's getting crazy data structures, implementation	3500	x246
1083C	Max Mex data structures, trees	2900	x950
1083B	The Fair Nut and Strings greedy, strings	2000	x1977
1083A	The Fair Nut and the Best Path data structures, dp, trees	1800	x5521
1082G	Petya and Graph flows, graphs	2400	x2197
1082F	Speed Dial dp, strings, trees	2800	x424
1082E	Increasing Frequency binary search, dp, greedy	2000	x4742
1082D	Maximum Diameter Graph constructive algorithms, graphs, implementation	1800	x3836
1082C	Multi-Subject Competition greedy, sortings	1600	x5800
1082B	Vova and Trophies greedy	1600	x7621
1082A	Vasya and Book implementation, math	1200	x8664
1081H	Palindromic Magic data structures, hashing, strings	3500	x110
1081G	Mergesort Strikes Back math, probabilities	3200	x393
1081F	Tricky Interactor constructive algorithms, implementation, interactive	2600	x477
1081E	Missing Numbers binary search, constructive algorithms, greedy, math, number theory	1900	x2616
1081D	Maximum Distance dsu, graphs, shortest paths, sortings	1800	x4186
1081C	Colorful Bricks combinatorics, dp, math	1500	x7375
1081B	Farewell Party constructive algorithms, implementation	1500	x4476
1081A	Definite Game constructive algorithms, math	800	x12158
1080F	Katya and Segments Sets data structures, interactive, sortings	2400	x728
1080E	Sonya and Matrix Beauty strings	2400	x1135
1080D	Olya and magical square constructive algorithms, implementation, math	2000	x1563
1080C	Masha and two friends implementation	1500	x4072
1080B	Margarite and the best present math	900	x11918
1080A	Petya and Origami math	800	x18294
1078E	Negative Time Summation constructive algorithms	3400	x88
1077F2	Pictures with Kittens (hard version) data structures, dp	2100	x3405
1077F1	Pictures with Kittens (easy version) dp	1900	x4521
1077E	Thematic Contests greedy, sortings	1800	x4757
1077D	Cutting Out binary search, sortings	1600	x9074
1077C	Good Array	1300	x17993
1077B	Disturbed People greedy	1000	x19168
1077A	Frog Jumping math	800	x30288
1076G	Array Game data structures, games	3000	x614
1076F	Summer Practice Report dp, greedy	2500	x649
1076E	Vasya and a Tree data structures, trees	1900	x3801
1076D	Edge Deletion graphs, greedy, shortest paths	1800	x5319
1076C	Meme Problem binary search, math	1300	x12593
1076B	Divisor Subtraction implementation, math, number theory	1200	x13223
1076A	Minimizing the String greedy, strings	1200	x13235
1075B	Taxi drivers and Lyft implementation, sortings	1200	x4278
1075A	The King's Race implementation, math	800	x8598
1073G	Yet Another LCP Problem data structures, string suffix structures	2600	x932
1073F	Choosing Two Paths dfs and similar, dp, greedy, trees	2500	x551
1073E	Segment Sum bitmasks, combinatorics, dp, math	2300	x2677
1073D	Berland Fair binary search, brute force, data structures, greedy	1700	x6446
1073C	Vasya and Robot binary search, two pointers	1800	x4841
1073B	Vasya and Books implementation, math	1000	x10641
1073A	Diverse Substring implementation, strings	1000	x15710
1071E	Rain Protection binary search, geometry	3500	x146
1070M	Algoland and Berland constructive algorithms, divide and conquer, geometry	3000	x70
1070L	Odd Federalization constructive algorithms	2600	x302
1070K	Video Posts implementation	1100	x4972
1070J	Streets and Avenues in Berhattan dp	2300	x701
1070I	Privatization of Roads in Berland flows, graph matchings, graphs	2400	x729
1070H	BerOS File Suggestion brute force, implementation	1500	x3676
1070G	Monsters and Potions brute force, dp, greedy, implementation	2300	x845
1070F	Debate greedy	1500	x3670
1070E	Getting Deals Done binary search, data structures	2100	x1393
1070D	Garbage Disposal greedy	1300	x4943
1070C	Cloud Computing data structures, greedy	2000	x2076
1070B	Berkomnadzor data structures, greedy	2400	x653
1070A	Find a Number dp, graphs, number theory, shortest paths	2200	x2380
1068C	Colored Rooks constructive algorithms, graphs	1700	x3200
1068B	LCM math, number theory	1200	x11764
1068A	Birthday math	1400	x6867
1067E	Random Forest Rank dp, graph matchings, math, trees	2800	x457
1067D	Computer Game dp, greedy, math, probabilities	3100	x412
1067C	Knights constructive algorithms	2600	x663
1067B	Multihedgehog dfs and similar, graphs, shortest paths	1800	x2722
1067A	Array Without Local Maximums dp	1900	x2913
1066F	Yet another 2D Walking dp	2100	x2084
1066E	Binary Numbers AND Sum data structures, implementation, math	1700	x6203
1066D	Boxes Packing binary search, implementation	1800	x5548
1066C	Books Queries implementation	1400	x9752
1066B	Heaters greedy, two pointers	1500	x8403
1066A	Vova and Train math	1100	x14664
1065G	Fibonacci Suffix strings	2700	x258
1065F	Up and Down the Tree dfs and similar, dp, trees	2500	x1208
1065E	Side Transmutations combinatorics, strings	2300	x1091
1065D	Three Pieces dfs and similar, dp, shortest paths	2200	x1327
1065C	Make It Equal greedy	1600	x7920
1065B	Vasya and Isolated Vertices constructive algorithms, graphs	1300	x10997
1065A	Vasya and Chocolate implementation, math	800	x14740
1064B	Equations of Mathematical Magic math	1200	x7581
1064A	Make a triangle! brute force, geometry, math	800	x22771
1063F	String Journey data structures, dp, string suffix structures	3300	x897
1063E	Lasers and Mirrors constructive algorithms, math	3000	x360
1063D	Candies for Children brute force, math	2600	x440
1063C	Dwarves, Hats and Extrasensory Abilities binary search, constructive algorithms, geometry, interactive	1900	x3080
1063B	Labyrinth graphs, shortest paths	1800	x7702
1063A	Oh Those Palindromes constructive algorithms, strings	1300	x10460
1062F	Upgrading Cities dfs and similar, graphs	2900	x676
1062E	Company binary search, data structures, dfs and similar, greedy, trees	2300	x1823
1062D	Fun with Integers dfs and similar, graphs, implementation, math	1800	x3981
1062C	Banh-mi greedy, implementation, math	1600	x5517
1062B	Math greedy, math, number theory	1500	x8945
1062A	A Prank greedy, implementation	1300	x8862