Problemset - Codeforces

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Pinely Round 4 (Div. 1 + Div. 2)
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Problems

#	Name
876B	Divisiblity of Differences implementation, math, number theory	1300	x8940
875B	Sorting the Coins dsu, implementation, sortings, two pointers	1500	x5175
873D	Merge Sort constructive algorithms, divide and conquer	1800	x3051
873C	Strange Game On Matrix greedy, two pointers	1600	x3229
873B	Balanced Substring dp, implementation	1500	x7624
870C	Maximum splitting dp, greedy, math, number theory	1300	x9020
869C	The Intriguing Obsession combinatorics, dp, math	1800	x4542
868C	Qualification Rounds bitmasks, brute force, constructive algorithms, dp	1500	x4583
868B	Race Against Time implementation	1400	x3659
865B	Ordering Pizza binary search, sortings, ternary search	1900	x1715
865A	Save the problem! constructive algorithms	1400	x4214
864D	Make a Permutation! greedy, implementation, math	1500	x5973
864C	Bus greedy, implementation, math	1500	x5843
863D	Yet Another Array Queries Problem data structures, implementation	1800	x3191
863C	1-2-3 graphs, implementation	1800	x2462
863B	Kayaking brute force, greedy, sortings	1500	x7947
862C	Mahmoud and Ehab and the xor constructive algorithms	1900	x4021
862B	Mahmoud and Ehab and the bipartiteness dfs and similar, graphs, trees	1300	x16782
859C	Pie Rules dp, games	1500	x5327
858D	Polycarp's phone book data structures, implementation, sortings	1600	x3750
858C	Did you mean... dp, greedy, implementation	1500	x5600
858B	Which floor? brute force, implementation	1500	x3713
856A	Set Theory brute force, constructive algorithms	1600	x1403
855B	Marvolo Gaunt's Ring brute force, data structures, dp	1500	x8485
853B	Jury Meeting greedy, sortings, two pointers	1800	x2506
853A	Planning greedy	1500	x5819
852G	Bathroom terminal implementation	1700	x1278
851B	Arpa and an exam about geometry geometry, math	1400	x5469
850A	Five Dimensional Points brute force, geometry, math	1700	x3053
849B	Tell Your World brute force, geometry	1600	x3574
848B	Rooter's Song constructive algorithms, data structures, geometry, implementation, sortings, two pointers	1900	x1876
848A	From Y to Y constructive algorithms	1600	x5101
847K	Travel Cards greedy, implementation, sortings	1800	x1673
847I	Noise Level dfs and similar, implementation, math	1900	x1513
847H	Load Testing greedy	1600	x2378
847E	Packmen binary search, dp	1800	x2831
847C	Sum of Nestings constructive algorithms	1800	x2349
847B	Preparing for Merge Sort binary search, data structures	1600	x4777
847A	Union of Doubly Linked Lists implementation	1500	x3340
846F	Random Query data structures, math, probabilities, two pointers	1800	x2228
846D	Monitor binary search, data structures	1900	x2406
846C	Four Segments brute force, data structures, dp	1800	x2642
846B	Math Show brute force, greedy	1800	x2481
846A	Curriculum Vitae brute force, implementation	1500	x4188
845D	Driving Test data structures, dp, greedy	1800	x2349
845C	Two TVs data structures, greedy, sortings	1500	x8293
845B	Luba And The Ticket brute force, greedy, implementation	1600	x4972
844B	Rectangles combinatorics, math	1300	x7217
843A	Sorting by Subsequences dfs and similar, dsu, implementation, math, sortings	1400	x5589
840A	Leha and Function combinatorics, greedy, math, number theory, sortings	1300	x6967
839C	Journey dfs and similar, dp, graphs, probabilities, trees	1500	x16369
839B	Game of the Rows brute force, greedy, implementation	1900	x3285
838A	Binary Blocks brute force	1400	x915
837C	Two Seals brute force, implementation	1500	x3968
837B	Flag of Berland brute force, implementation	1600	x3910
835D	Palindromic characteristics brute force, dp, hashing, strings	1900	x4029
835C	Star sky dp, implementation	1600	x7731
833A	The Meaningless Game math, number theory	1700	x6128
832D	Misha, Grisha and Underground dfs and similar, graphs, trees	1900	x3675
832B	Petya and Exam implementation, strings	1600	x4359
831C	Jury Marks brute force, constructive algorithms	1700	x4463
830B	Cards Sorting data structures, implementation, sortings	1600	x2817
830A	Office Keys binary search, brute force, dp, greedy, sortings	1800	x6781
828B	Black Square implementation	1300	x5670
827B	High Load constructive algorithms, greedy, implementation, trees	1800	x3452
827A	String Reconstruction data structures, greedy, sortings, strings	1700	x4001
825D	Suitable Replacement binary search, greedy, implementation	1500	x3215
825C	Multi-judge Solving greedy, implementation	1600	x4447
825B	Five-In-a-Row brute force, implementation	1600	x4105
822D	My pretty girl Noora brute force, dp, greedy, math, number theory	1800	x3026
822C	Hacker, pack your bags! binary search, greedy, implementation, sortings	1600	x4555
821C	Okabe and Boxes data structures, greedy, trees	1500	x6741
821B	Okabe and Banana Trees brute force, math	1300	x5716
820B	Mister B and Angle in Polygon constructive algorithms, geometry, math	1300	x5139
819B	Mister B and PR Shifts data structures, implementation, math	1900	x1683
818E	Card Game Again binary search, data structures, number theory, two pointers	1900	x2106
818D	Multicolored Cars data structures, implementation	1700	x3435
818B	Permutation Game implementation	1600	x2993
817D	Imbalanced Array data structures, divide and conquer, dsu, sortings	1900	x4583
817C	Really Big Numbers binary search, brute force, dp, math	1600	x7200
817B	Makes And The Product combinatorics, implementation, math, sortings	1500	x5637
816B	Karen and Coffee binary search, data structures, implementation	1400	x17188
815A	Karen and Game brute force, greedy, implementation	1700	x5596
814C	An impassioned circulation of affection brute force, dp, strings, two pointers	1600	x6453
814B	An express train to reveries constructive algorithms	1300	x5599
813C	The Tag Game dfs and similar, graphs	1700	x5823
813B	The Golden Age brute force, math	1800	x3875
812C	Sagheer and Nubian Market binary search, sortings	1500	x13470
812B	Sagheer, the Hausmeister bitmasks, brute force, dp	1600	x5139
811C	Vladik and Memorable Trip dp, implementation	1900	x3222
810B	Summer sell-off greedy, sortings	1300	x11207
809A	Do you want a date? implementation, math, sortings	1500	x4681
808D	Array Division binary search, data structures, implementation	1900	x6886
808C	Tea Party constructive algorithms, greedy, sortings	1400	x6063
808B	Average Sleep Time data structures, implementation, math	1300	x7113
807B	T-Shirt Hunt brute force, implementation	1300	x3531
804B	Minimum number of steps combinatorics, greedy, implementation, math	1400	x9584
803D	Magazine Ad binary search, greedy	1900	x3179
803C	Maximal GCD constructive algorithms, greedy, math	1900	x5017
803A	Maximal Binary Matrix constructive algorithms	1400	x4775