Problemset - Codeforces

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Codeforces Round (Div. 2)
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Problems

#	Name
1805D	A Wide, Wide Graph dfs and similar, dp, graphs, greedy, trees	1800	x6368
1804H	Code Lock bitmasks, dp	3300	x174
1804E	Routing bitmasks, brute force, dfs and similar, dp, graphs	2400	x1408
1804D	Accommodation brute force, dp, greedy, implementation	2000	x4553
1801F	Another n-dimensional chocolate bar dp, math, meet-in-the-middle, number theory	2700	x562
1801D	The way home binary search, data structures, dp, graphs, greedy, shortest paths, sortings	2100	x2138
1801C	Music Festival binary search, data structures, dp, greedy, sortings	1900	x3351
1799H	Tree Cutting bitmasks, dfs and similar, dp	3200	x277
1799G	Count Voting combinatorics, dp, math	2600	x736
1799F	Halve or Subtract binary search, brute force, dp, greedy, sortings	2700	x796
1799D2	Hot Start Up (hard version) data structures, dp	2100	x2398
1799D1	Hot Start Up (easy version) dp	1900	x4312
1798F	Gifts from Grandfather Ahmed dp, math, number theory	2500	x481
1798E	Multitest Generator brute force, dp	2300	x1561
1797D	Li Hua and Tree brute force, data structures, dfs and similar, dp, implementation, trees	1900	x3861
1796E	Colored Subgraphs dfs and similar, dp, games, greedy, trees	2500	x736
1796D	Maximum Subarray data structures, dp, greedy, two pointers	2000	x4181
1795E	Explosions? binary search, data structures, dp, greedy, math	2200	x1977
1794E	Labeling the Tree with Distances data structures, dp, greedy, hashing, implementation, trees	2400	x1055
1794D	Counting Factorizations combinatorics, divide and conquer, dp, math, number theory	1900	x3494
1793E	Velepin and Marketing binary search, data structures, dp, greedy, sortings, two pointers	2600	x962
1793D	Moscow Gorillas binary search, dp, greedy, implementation, math, two pointers	1800	x5989
1792F2	Graph Coloring (hard version) brute force, combinatorics, divide and conquer, dp, fft, graphs	2900	x382
1792F1	Graph Coloring (easy version) combinatorics, dp, graphs	2700	x696
1792E	Divisors and Table brute force, dfs and similar, dp, number theory	2400	x1360
1791E	Negatives and Positives dp, greedy, sortings	1100	x27231
1789F	Serval and Brain Power bitmasks, brute force, dp, greedy, implementation, strings	2700	x664
1789E	Serval and Music Game brute force, dp, implementation, math, number theory	2500	x799
1789C	Serval and Toxel's Arrays combinatorics, dp, implementation, math	1500	x8372
1788E	Sum Over Zero data structures, dfs and similar, dp	2200	x2598
1787H	Codeforces Scoreboard binary search, data structures, dp, geometry	3300	x214
1787C	Remove the Bracket dp, greedy, math	1600	x6942
1784E	Infinite Game brute force, combinatorics, dp, games, probabilities	3100	x315
1784D	Wooden Spoon combinatorics, dp	2400	x984
1783D	Different Arrays brute force, dp, implementation	2000	x4320
1781F	Bracket Insertion combinatorics, dp, math, trees	2700	x816
1780F	Three Chairs bitmasks, brute force, combinatorics, data structures, dp, number theory, sortings	2300	x1425
1779F	Xorcerer's Stones bitmasks, constructive algorithms, dp, trees	2500	x1247
1779D	Boris and His Amazing Haircut constructive algorithms, data structures, dp, dsu, greedy, sortings	1700	x7757
1778F	Maximizing Root dfs and similar, dp, graphs, math, number theory, trees	2600	x637
1778D	Flexible String Revisit combinatorics, dp, math, probabilities	2100	x2685
1777D	Score of a Tree bitmasks, combinatorics, dfs and similar, dp, math, probabilities, trees	1900	x3399
1776M	Parmigiana With Seafood binary search, dp, greedy, trees	3000	x367
1776K	Uniform Chemistry dp, math	3200	x65
1776E	Crossing the Railways data structures, dp	3500	x68
1776B	Vittorio Plays with LEGO Bricks dp, geometry	2200	x1306
1775F	Laboratory on Pluto constructive algorithms, dp, greedy, math	2500	x755
1774G	Segment Covering brute force, combinatorics, constructive algorithms, data structures, dp, trees	3200	x434
1774E	Two Chess Pieces dfs and similar, dp, greedy, trees	1900	x3435
1774C	Ice and Fire constructive algorithms, dp, greedy	1300	x11852
1773L	Lisa's Sequences dp	3500	x40
1773G	Game of Questions bitmasks, combinatorics, dp, fft, math, probabilities	2800	x351
1771E	Hossam and a Letter brute force, dp, implementation, two pointers	2500	x678
1771D	Hossam and (sub-)palindromic tree brute force, data structures, dfs and similar, dp, strings, trees	2100	x2681
1771B	Hossam and Friends binary search, constructive algorithms, dp, two pointers	1400	x13802
1770F	Koxia and Sequence bitmasks, combinatorics, dp, math, number theory	3100	x651
1770E	Koxia and Tree combinatorics, dfs and similar, dp, dsu, math, probabilities, trees	2400	x1329
1769D1	Игра в Девятку I *special problem, brute force, dp	1800	x375
1769C2	Подкрутка II *special problem, dp	1300	x945
1769C1	Подкрутка I *special problem, brute force, dp, greedy	1200	x954
1768F	Wonderful Jump dp, greedy	2900	x813
1767E	Algebra Flash bitmasks, brute force, dp, graphs, math, meet-in-the-middle, trees	2500	x885
1767D	Playoff combinatorics, constructive algorithms, dp, greedy, math	1500	x9727
1767C	Count Binary Strings data structures, dp	2100	x2600
1766E	Decomposition binary search, brute force, data structures, divide and conquer, dp, two pointers	2300	x1164
1766C	Hamiltonian Wall dp, implementation	1300	x13432
1765F	Chemistry Lab dp, geometry, probabilities	2200	x592
1765C	Card Guessing combinatorics, dp, probabilities	2600	x379
1764E	Doremy's Number Line dp, greedy, sortings	2400	x1209
1764D	Doremy's Pegging Game combinatorics, dp, math	2000	x2716
1763F	Edge Queries data structures, dfs and similar, dp, dsu, graphs, trees	3000	x465
1763E	Node Pairs dp, graphs, math, number theory	2200	x1758
1763D	Valid Bitonic Permutations combinatorics, dp, implementation, math, number theory	2200	x2001
1762F	Good Pairs binary search, data structures, dp	2600	x582
1761F2	Anti-median (Hard Version) combinatorics, dp, math	3500	x80
1761F1	Anti-median (Easy Version) dp, math	3100	x205
1759E	The Humanoid brute force, dp, sortings	1500	x10560
1753C	Wish I Knew How to Sort dp, math, probabilities	2000	x4305
1753A2	Make Nonzero Sum (hard version) constructive algorithms, dp, greedy	1500	x10130
1753A1	Make Nonzero Sum (easy version) constructive algorithms, dp, greedy	1300	x14696
1750H	BinaryStringForces constructive algorithms, data structures, dp	3500	x81
1750G	Doping combinatorics, dp, math	3300	x236
1750F	Majority combinatorics, dp, math, strings	2700	x889
1750E	Bracket Cost binary search, data structures, divide and conquer, dp, greedy, strings	2400	x1390
1749D	Counting Arrays combinatorics, dp, math, number theory	1900	x5480
1748E	Yet Another Array Counting Problem binary search, data structures, divide and conquer, dp, flows, math, trees	2300	x1831
1748C	Zero-Sum Prefixes brute force, data structures, dp, greedy, implementation	1600	x10893
1747E	List Generation combinatorics, dp, math	2900	x493
1746G	Olympiad Training binary search, data structures, dp, flows, geometry, implementation, sortings	3500	x92
1746E2	Joking (Hard Version) dp, interactive	3200	x385
1746D	Paths on the Tree dfs and similar, dp, greedy, sortings, trees	1900	x4538
1743G	Antifibonacci Cut bitmasks, combinatorics, constructive algorithms, data structures, dp, hashing, math	3000	x253
1743F	Intersection and Union data structures, dp, matrices, probabilities	2300	x1459
1743E	FTL binary search, dp	2400	x1537
1743D	Problem with Random Tests brute force, dp, greedy, probabilities	1700	x7513
1743C	Save the Magazines constructive algorithms, dp, greedy	1100	x18979
1741G	Kirill and Company bitmasks, brute force, dfs and similar, dp, flows, graphs, shortest paths	2200	x1468
1741E	Sending a Sequence Over the Network dp	1600	x11554
1740I	Arranging Crystal Balls data structures, divide and conquer, divide and conquer, dp, geometry, graphs, number theory	3500	x111
1740F	Conditional Mix combinatorics, dp, math	2600	x786