Problemset - Codeforces

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Codeforces Round (Div. 2)
7 days

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Problems

#	Name
911D	Inversion Counting brute force, math	1800	x4595
911C	Three Garlands brute force, constructive algorithms	1400	x7038
910C	Minimum Sum constructive algorithms, greedy, math	1700	x1803
910B	Door Frames greedy, implementation	1600	x1702
909E	Coprocessor dfs and similar, dp, graphs, greedy	1900	x2076
909C	Python Indentation dp	1800	x4905
909B	Segments constructive algorithms, math	1300	x6388
908C	New Year and Curling brute force, geometry, implementation, math	1500	x6911
907B	Tic-Tac-Toe implementation	1400	x4063
907A	Masha and Bears brute force, implementation	1300	x5694
906A	Shockers implementation, strings	1600	x4129
901A	Hashing Trees constructive algorithms, trees	1500	x5114
900C	Remove Extra One brute force, data structures, math	1700	x4553
900B	Position in Fraction math, number theory	1300	x7828
899D	Shovel Sale constructive algorithms, math	1800	x2756
899C	Dividing the numbers constructive algorithms, graphs, math	1300	x8461
898E	Squares and not squares constructive algorithms, greedy	1600	x4585
898D	Alarm Clock greedy	1600	x3901
898C	Phone Numbers implementation, strings	1400	x5279
897B	Chtholly's request brute force	1300	x7176
896A	Nephren gives a riddle binary search, dfs and similar	1700	x3450
895B	XK Segments binary search, math, sortings, two pointers	1700	x3538
894C	Marco and GCD Sequence constructive algorithms, math	1900	x4366
894B	Ralph And His Magic Field combinatorics, constructive algorithms, math, number theory	1800	x4464
893D	Credit Card data structures, dp, greedy, implementation	1900	x3037
893C	Rumor dfs and similar, graphs, greedy	1300	x23061
891A	Pride brute force, dp, greedy, math, number theory	1500	x10157
888E	Maximum Subsequence bitmasks, divide and conquer, meet-in-the-middle	1800	x7242
888D	Almost Identity Permutations combinatorics, dp, math	1600	x8320
888C	K-Dominant Character binary search, implementation, two pointers	1400	x8228
887C	Solution for Cube brute force, implementation	1500	x2892
887B	Cubes for Masha brute force, implementation	1300	x5625
886C	Petya and Catacombs dsu, greedy, implementation, trees	1300	x5474
884C	Bertown Subway dfs and similar, greedy, math	1500	x4705
883K	Road Widening constructive algorithms, greedy, implementation	1800	x1096
883I	Photo Processing binary search, dp	1900	x1958
883H	Palindromic Cut brute force, implementation, strings	1800	x1615
883G	Orientation of Edges dfs and similar, graphs	1900	x1410
883F	Lost in Transliteration implementation	1300	x2268
883E	Field of Wonders implementation, strings	1500	x1898
878A	Short Program bitmasks, constructive algorithms	1600	x5477
877C	Slava and tanks constructive algorithms	1600	x5684
877B	Nikita and string brute force, dp	1500	x10421
876B	Divisiblity of Differences implementation, math, number theory	1300	x9144
875B	Sorting the Coins dsu, implementation, sortings, two pointers	1500	x5186
873D	Merge Sort constructive algorithms, divide and conquer	1800	x3142
873C	Strange Game On Matrix greedy, two pointers	1600	x3265
873B	Balanced Substring dp, implementation	1500	x7778
870C	Maximum splitting dp, greedy, math, number theory	1300	x9102
869C	The Intriguing Obsession combinatorics, dp, math	1800	x4701
868C	Qualification Rounds bitmasks, brute force, constructive algorithms, dp	1500	x4616
868B	Race Against Time implementation	1400	x3677
865B	Ordering Pizza binary search, sortings, ternary search	1900	x1831
865A	Save the problem! constructive algorithms	1400	x4329
864D	Make a Permutation! greedy, implementation, math	1500	x5999
864C	Bus greedy, implementation, math	1500	x5855
863D	Yet Another Array Queries Problem data structures, implementation	1800	x3250
863C	1-2-3 graphs, implementation	1800	x2496
863B	Kayaking brute force, greedy, sortings	1500	x8241
862C	Mahmoud and Ehab and the xor constructive algorithms	1900	x4075
862B	Mahmoud and Ehab and the bipartiteness dfs and similar, graphs, trees	1300	x17581
859C	Pie Rules dp, games	1500	x5394
858D	Polycarp's phone book data structures, implementation, sortings	1600	x3837
858C	Did you mean... dp, greedy, implementation	1500	x5623
858B	Which floor? brute force, implementation	1500	x3732
856A	Set Theory brute force, constructive algorithms	1600	x1431
855B	Marvolo Gaunt's Ring brute force, data structures, dp	1500	x8630
853B	Jury Meeting greedy, sortings, two pointers	1800	x2522
853A	Planning greedy	1500	x5842
852G	Bathroom terminal implementation	1700	x1287
851B	Arpa and an exam about geometry geometry, math	1400	x5492
850A	Five Dimensional Points brute force, geometry, math	1700	x3197
849B	Tell Your World brute force, geometry	1600	x3640
848B	Rooter's Song constructive algorithms, data structures, geometry, implementation, sortings, two pointers	1900	x1895
848A	From Y to Y constructive algorithms	1600	x5121
847K	Travel Cards greedy, implementation, sortings	1800	x1688
847I	Noise Level dfs and similar, implementation, math	1900	x1525
847H	Load Testing greedy	1600	x2395
847E	Packmen binary search, dp	1800	x2971
847C	Sum of Nestings constructive algorithms	1800	x2371
847B	Preparing for Merge Sort binary search, data structures	1600	x4969
847A	Union of Doubly Linked Lists implementation	1500	x3371
846F	Random Query data structures, math, probabilities, two pointers	1800	x2253
846D	Monitor binary search, data structures	1900	x2470
846C	Four Segments brute force, data structures, dp	1800	x2673
846B	Math Show brute force, greedy	1800	x2513
846A	Curriculum Vitae brute force, implementation	1500	x4250
845D	Driving Test data structures, dp, greedy	1800	x2377
845C	Two TVs data structures, greedy, sortings	1500	x8605
845B	Luba And The Ticket brute force, greedy, implementation	1600	x5025
844B	Rectangles combinatorics, math	1300	x7387
843A	Sorting by Subsequences dfs and similar, dsu, implementation, math, sortings	1400	x5631
840A	Leha and Function combinatorics, greedy, math, number theory, sortings	1300	x6998
839C	Journey dfs and similar, dp, graphs, probabilities, trees	1500	x16796
839B	Game of the Rows brute force, greedy, implementation	1900	x3324
838A	Binary Blocks brute force	1400	x923
837C	Two Seals brute force, implementation	1500	x4000
837B	Flag of Berland brute force, implementation	1600	x3933
835D	Palindromic characteristics brute force, dp, hashing, strings	1900	x4120
835C	Star sky dp, implementation	1600	x7893