Problemset - Codeforces

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Educational Codeforces Round 175 (Rated for Div. 2)
45:35:45
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Problems

#	Name
1088F	Ehab and a weird weight formula data structures, trees	2800	x537
1088E	Ehab and a component choosing problem dp, greedy, math, trees	2400	x1531
1088D	Ehab and another another xor problem bitmasks, constructive algorithms, implementation, interactive	2000	x2926
1088C	Ehab and a 2-operation task constructive algorithms, greedy, math	1400	x8265
1088B	Ehab and subtraction implementation, sortings	1000	x12762
1088A	Ehab and another construction problem brute force, constructive algorithms	800	x17102
1086F	Forest Fires math	3500	x274
1085G	Beautiful Matrix combinatorics, data structures, dp	2900	x536
1085F	Rock-Paper-Scissors Champion	2500	x630
1085E	Vasya and Templates greedy, implementation, strings	2300	x1076
1085D	Minimum Diameter Tree constructive algorithms, implementation, trees	1700	x5596
1085C	Connect Three implementation, math	1600	x5492
1085B	Div Times Mod math	1100	x9550
1085A	Right-Left Cipher implementation, strings	800	x12293
1084C	The Fair Nut and String combinatorics, dp, implementation	1500	x8655
1084B	Kvass and the Fair Nut greedy, implementation	1200	x7905
1084A	The Fair Nut and Elevator brute force, implementation	1000	x7993
1083F	The Fair Nut and Amusing Xor data structures	3300	x297
1083E	The Fair Nut and Rectangles data structures, dp, geometry	2400	x4503
1083D	The Fair Nut's getting crazy data structures, implementation	3500	x254
1083C	Max Mex data structures, trees	2900	x959
1083B	The Fair Nut and Strings greedy, strings	2000	x1991
1083A	The Fair Nut and the Best Path data structures, dp, trees	1800	x5621
1082G	Petya and Graph flows, graphs	2400	x2273
1082F	Speed Dial dp, strings, trees	2800	x427
1082E	Increasing Frequency binary search, dp, greedy	2000	x4904
1082D	Maximum Diameter Graph constructive algorithms, graphs, implementation	1800	x3877
1082C	Multi-Subject Competition greedy, sortings	1600	x5873
1082B	Vova and Trophies greedy	1600	x7738
1082A	Vasya and Book implementation, math	1200	x8781
1081H	Palindromic Magic data structures, hashing, strings	3500	x114
1081G	Mergesort Strikes Back math, probabilities	3200	x409
1081F	Tricky Interactor constructive algorithms, implementation, interactive	2600	x479
1081E	Missing Numbers binary search, constructive algorithms, greedy, math, number theory	1900	x2641
1081D	Maximum Distance dsu, graphs, shortest paths, sortings	1800	x4230
1081C	Colorful Bricks combinatorics, dp, math	1500	x7451
1081B	Farewell Party constructive algorithms, implementation	1500	x4521
1081A	Definite Game constructive algorithms, math	800	x12258
1080F	Katya and Segments Sets data structures, interactive, sortings	2400	x736
1080E	Sonya and Matrix Beauty strings	2400	x1148
1080D	Olya and magical square constructive algorithms, implementation, math	2000	x1574
1080C	Masha and two friends implementation	1500	x4090
1080B	Margarite and the best present math	900	x11989
1080A	Petya and Origami math	800	x18415
1078E	Negative Time Summation constructive algorithms	3400	x89
1077F2	Pictures with Kittens (hard version) data structures, dp	2100	x3469
1077F1	Pictures with Kittens (easy version) dp	1900	x4607
1077E	Thematic Contests greedy, sortings	1800	x4788
1077D	Cutting Out binary search, sortings	1600	x9272
1077C	Good Array	1300	x18842
1077B	Disturbed People greedy	1000	x19367
1077A	Frog Jumping math	800	x30679
1076G	Array Game data structures, games	3000	x637
1076F	Summer Practice Report dp, greedy	2500	x663
1076E	Vasya and a Tree data structures, trees	1900	x3836
1076D	Edge Deletion graphs, greedy, shortest paths	1800	x5388
1076C	Meme Problem binary search, math	1300	x12709
1076B	Divisor Subtraction implementation, math, number theory	1200	x13389
1076A	Minimizing the String greedy, strings	1200	x13406
1075B	Taxi drivers and Lyft implementation, sortings	1200	x4327
1075A	The King's Race implementation, math	800	x8654
1073G	Yet Another LCP Problem data structures, string suffix structures	2600	x946
1073F	Choosing Two Paths dfs and similar, dp, greedy, trees	2500	x557
1073E	Segment Sum bitmasks, combinatorics, dp, math	2300	x2734
1073D	Berland Fair binary search, brute force, data structures, greedy	1700	x6500
1073C	Vasya and Robot binary search, two pointers	1800	x4942
1073B	Vasya and Books implementation, math	1000	x10691
1073A	Diverse Substring implementation, strings	1000	x15894
1071E	Rain Protection binary search, geometry	3500	x148
1070M	Algoland and Berland constructive algorithms, divide and conquer, geometry	3000	x74
1070L	Odd Federalization constructive algorithms	2600	x315
1070K	Video Posts implementation	1100	x5011
1070J	Streets and Avenues in Berhattan dp	2300	x711
1070I	Privatization of Roads in Berland flows, graph matchings, graphs	2400	x741
1070H	BerOS File Suggestion brute force, implementation	1500	x3693
1070G	Monsters and Potions brute force, dp, greedy, implementation	2300	x854
1070F	Debate greedy	1500	x3695
1070E	Getting Deals Done binary search, data structures	2100	x1404
1070D	Garbage Disposal greedy	1300	x4974
1070C	Cloud Computing data structures, greedy	2000	x2094
1070B	Berkomnadzor data structures, greedy	2400	x659
1070A	Find a Number dp, graphs, number theory, shortest paths	2200	x2399
1068C	Colored Rooks constructive algorithms, graphs	1700	x3220
1068B	LCM math, number theory	1200	x11897
1068A	Birthday math	1400	x6906
1067E	Random Forest Rank dp, graph matchings, math, trees	2800	x485
1067D	Computer Game dp, greedy, math, probabilities	3100	x426
1067C	Knights constructive algorithms	2600	x677
1067B	Multihedgehog dfs and similar, graphs, shortest paths	1800	x2740
1067A	Array Without Local Maximums dp	1900	x2947
1066F	Yet another 2D Walking dp	2100	x2102
1066E	Binary Numbers AND Sum data structures, implementation, math	1700	x6256
1066D	Boxes Packing binary search, implementation	1800	x5597
1066C	Books Queries implementation	1400	x9803
1066B	Heaters greedy, two pointers	1500	x8481
1066A	Vova and Train math	1100	x14799
1065G	Fibonacci Suffix strings	2700	x259
1065F	Up and Down the Tree dfs and similar, dp, trees	2500	x1222
1065E	Side Transmutations combinatorics, strings	2300	x1108
1065D	Three Pieces dfs and similar, dp, shortest paths	2200	x1337