Problemset - Codeforces

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Codeforces Global Round 28
18:51:29
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Problems

#	Name
1106E	Lunar New Year and Red Envelopes data structures, dp	2100	x2596
1105D	Kilani and the Game dfs and similar, graphs, implementation, shortest paths	1900	x4162
1103B	Game with modulo binary search, constructive algorithms, interactive	2000	x3298
1102F	Elongated Matrix binary search, bitmasks, brute force, dp, graphs	2000	x2043
1101D	GCD Counting data structures, dfs and similar, dp, number theory, trees	2000	x4764
1098B	Nice table brute force, constructive algorithms, greedy, math	2100	x1705
1095F	Make It Connected dsu, graphs, greedy	1900	x6339
1095E	Almost Regular Bracket Sequence implementation	1900	x4165
1092F	Tree with Maximum Cost dfs and similar, dp, trees	1900	x8386
1092E	Minimal Diameter Forest constructive algorithms, dfs and similar, greedy, trees	2000	x1773
1090L	Berland University greedy, math	2000	x1316
1090K	Right Expansion Of The Mind math	2000	x1110
1090I	Minimal Product	2000	x1108
1090B	LaTeX Expert	1900	x1471
1089F	Fractions math	1900	x2015
1088D	Ehab and another another xor problem bitmasks, constructive algorithms, implementation, interactive	2000	x2892
1083B	The Fair Nut and Strings greedy, strings	2000	x1977
1082E	Increasing Frequency binary search, dp, greedy	2000	x4735
1081E	Missing Numbers binary search, constructive algorithms, greedy, math, number theory	1900	x2616
1080D	Olya and magical square constructive algorithms, implementation, math	2000	x1563
1077F2	Pictures with Kittens (hard version) data structures, dp	2100	x3400
1077F1	Pictures with Kittens (easy version) dp	1900	x4509
1076E	Vasya and a Tree data structures, trees	1900	x3800
1070E	Getting Deals Done binary search, data structures	2100	x1393
1070C	Cloud Computing data structures, greedy	2000	x2074
1067A	Array Without Local Maximums dp	1900	x2913
1066F	Yet another 2D Walking dp	2100	x2084
1063C	Dwarves, Hats and Extrasensory Abilities binary search, constructive algorithms, geometry, interactive	1900	x3079
1061D	TV Shows data structures, greedy, implementation, sortings	2000	x2387
1060E	Sergey and Subway dfs and similar, dp, trees	2000	x3196
1060D	Social Circles greedy, math	1900	x3650
1057C	Tanya and Colored Candies *special problem, dp	2000	x946
1056E	Check Transcription brute force, data structures, hashing, strings	2100	x2302
1055C	Lucky Days math, number theory	1900	x1942
1054D	Changing Array greedy, implementation	1900	x2266
1044C	Optimal Polygon Perimeter dp, geometry	2100	x1358
1044B	Intersecting Subtrees dfs and similar, interactive, trees	1900	x1583
1043E	Train Hard, Win Easy constructive algorithms, greedy, math, sortings	1900	x2791
1041E	Tree Reconstruction constructive algorithms, data structures, graphs, greedy	1900	x3619
1039B	Subway Pursuit binary search, interactive, probabilities	2100	x2384
1036C	Classy Numbers combinatorics, dp	1900	x9896
1033D	Divisors interactive, math, number theory	2000	x2418
1032E	The Unbearable Lightness of Weights dp, math	2100	x1700
1032D	Barcelonian Distance geometry, implementation	1900	x2846
1031D	Minimum path greedy	1900	x2827
1030E	Vasya and Good Sequences bitmasks, dp	2000	x3131
1029F	Multicolored Markers binary search, brute force, math, number theory	2000	x2603
1029E	Tree with Small Distances dp, graphs, greedy	2100	x2970
1029D	Concatenated Multiples implementation, math	1900	x3898
1028D	Order book combinatorics, data structures, greedy	2100	x1748
1027E	Inverse Coloring combinatorics, dp, math	2100	x2144
1025D	Recovering BST brute force, dp, math, number theory, trees	2100	x3689
1023E	Down or Right constructive algorithms, interactive, matrices	2100	x2052
1019B	The hat binary search, interactive	2000	x1970
1017D	The Wu bitmasks, brute force, data structures	1900	x3562
1015E2	Stars Drawing (Hard Edition) binary search, dp, greedy	1900	x3663
1012C	Hills dp	1900	x3530
1012B	Chemical table constructive algorithms, dfs and similar, dsu, graphs, matrices	1900	x4052
1010D	Mars rover dfs and similar, graphs, implementation, trees	2000	x2391
1009E	Intercity Travelling combinatorics, math, probabilities	2000	x3025
1006F	Xor-Paths bitmasks, brute force, dp, meet-in-the-middle	2100	x5484
1005F	Berland and the Shortest Paths brute force, dfs and similar, graphs, shortest paths	2100	x1776
1003E	Tree Constructing constructive algorithms, graphs	2100	x2749
1002E2	Another array reconstruction algorithm *special problem	1900	x203
1002A4	Generate W state *special problem	1900	x267
1000E	We Need More Bosses dfs and similar, graphs, trees	2100	x4808
1000D	Yet Another Problem On a Subsequence combinatorics, dp	1900	x4281
999F	Cards and Joy dp	2000	x2747
999E	Reachability from the Capital dfs and similar, graphs, greedy	2000	x6781
999D	Equalize the Remainders data structures, greedy, implementation	1900	x4433
997B	Roman Digits brute force, combinatorics, dp, greedy, math	2000	x2991
995A	Tesla constructive algorithms, implementation	2100	x1705
993C	Careful Maneuvering bitmasks, brute force, geometry	2100	x1714
993B	Open Communication bitmasks, brute force	1900	x1965
992D	Nastya and a Game brute force, implementation, math	2100	x1662
990E	Post Lamps brute force, greedy	2100	x2037
988F	Rain and Umbrellas dp	2100	x2362
988E	Divisibility by 25 brute force, greedy	2100	x4028
985E	Pencils and Boxes binary search, data structures, dp, greedy, two pointers	2100	x3706
985D	Sand Fortress binary search, constructive algorithms, math	2100	x2579
982D	Shark brute force, data structures, dsu, trees	1900	x2349
981D	Bookshelves bitmasks, dp, greedy	1900	x3281
980D	Perfect Groups dp, math, number theory	2100	x2739
976E	Well played! greedy, sortings	2100	x2416
975D	Ghosts geometry, math	2000	x2229
965D	Single-use Stones binary search, flows, greedy, two pointers	1900	x3122
965C	Greedy Arkady math	2000	x2120
963B	Destruction of a Tree constructive algorithms, dfs and similar, dp, greedy, trees	2000	x2856
961E	Tufurama data structures	1900	x3703
961D	Pair Of Lines geometry	2000	x4384
960F	Pathwalks data structures, dp, graphs	2100	x3004
960D	Full Binary Tree Queries brute force, implementation, trees	2100	x1887
959E	Mahmoud and Ehab and the xor-MST bitmasks, dp, graphs, implementation, math	1900	x3456
959D	Mahmoud and Ehab and another array construction task constructive algorithms, greedy, math, number theory	1900	x3105
958C2	Encryption (medium) dp	2000	x1273
958A2	Death Stars (medium) hashing, strings	2000	x926
955C	Sad powers binary search, math, number theory	2100	x2723
954G	Castle Defense binary search, data structures, greedy, two pointers	2000	x2173
954F	Runner's Problem dp, matrices, sortings	2100	x1226
954E	Water Taps binary search, greedy, sortings	2000	x1930