Problemset - Codeforces

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Codeforces Round #851 (Div. 2)
37:58:37
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Problems

#	Name
1792F2	Graph Coloring (hard version) brute force, combinatorics, divide and conquer, dp, fft, graphs	2900	x197
1792F1	Graph Coloring (easy version) combinatorics, dp, graphs	2700	x330
1792E	Divisors and Table brute force, dfs and similar, dp, number theory	2400	x751
1791E	Negatives and Positives dp, greedy, sortings	1100	x14654
1787H	Codeforces Scoreboard binary search, data structures, dp, geometry	3300	x96
1787C	Remove the Bracket dp, greedy, math	1600	x4298
1784E	Infinite Game brute force, combinatorics, dp, games, probabilities		x111
1784D	Wooden Spoon combinatorics, dp		x497
1783D	Different Arrays brute force, dp, implementation	2000	x2959
1781F	Bracket Insertion combinatorics, dp, math, trees	2700	x500
1780F	Three Chairs bitmasks, brute force, combinatorics, data structures, dp, number theory, sortings		x806
1779F	Xorcerer's Stones bitmasks, constructive algorithms, dp, trees	2500	x953
1779D	Boris and His Amazing Haircut constructive algorithms, data structures, dp, dsu, greedy, sortings	1700	x5501
1778F	Maximizing Root dfs and similar, dp, graphs, math, number theory, trees		x288
1778D	Flexible String Revisit combinatorics, dp, math, probabilities		x1527
1777D	Score of a Tree bitmasks, combinatorics, dfs and similar, dp, math, probabilities, trees		x1984
1775F	Laboratory on Pluto constructive algorithms, dp, greedy, math	2500	x535
1774G	Segment Covering brute force, combinatorics, constructive algorithms, data structures, dp, trees	3200	x177
1774E	Two Chess Pieces dfs and similar, dp, greedy, trees	1900	x2472
1774C	Ice and Fire constructive algorithms, dp, greedy	1300	x8998
1773L	Lisa's Sequences dp	3500	x5
1773G	Game of Questions bitmasks, combinatorics, dp, fft, math, probabilities	2800	x182
1771E	Hossam and a Letter brute force, dp, implementation, two pointers	2500	x511
1771D	Hossam and (sub-)palindromic tree brute force, data structures, dfs and similar, dp, strings, trees	2100	x1903
1771B	Hossam and Friends binary search, constructive algorithms, dp, two pointers	1400	x8794
1770F	Koxia and Sequence bitmasks, combinatorics, dp, math, number theory	3100	x334
1770E	Koxia and Tree combinatorics, dfs and similar, dp, dsu, math, probabilities, trees	2400	x1035
1769D1	Игра в Девятку I *special problem, brute force, dp	1800	x313
1769C2	Подкрутка II *special problem, dp	1300	x686
1769C1	Подкрутка I *special problem, brute force, dp, greedy	1200	x719
1768F	Wonderful Jump dp, greedy	2900	x420
1767E	Algebra Flash bitmasks, brute force, dp, graphs, math, meet-in-the-middle, trees	2500	x542
1767D	Playoff combinatorics, constructive algorithms, dp, greedy, math	1500	x7111
1767C	Count Binary Strings data structures, dp	2100	x1840
1766E	Decomposition binary search, brute force, data structures, divide and conquer, dp, two pointers	2300	x869
1766C	Hamiltonian Wall dp, implementation	1300	x9955
1765F	Chemistry Lab dp, geometry, probabilities	2200	x404
1765C	Card Guessing combinatorics, dp, probabilities	2600	x199
1764E	Doremy's Number Line dp, greedy, sortings	2400	x958
1764D	Doremy's Pegging Game combinatorics, dp, math	2000	x2094
1763F	Edge Queries data structures, dfs and similar, dp, dsu, graphs, trees	3000	x233
1763E	Node Pairs dp, graphs, math, number theory	2200	x1237
1763D	Valid Bitonic Permutations combinatorics, dp, implementation, math, number theory	2200	x1526
1762F	Good Pairs binary search, data structures, dp	2600	x284
1761F2	Anti-median (Hard Version) combinatorics, dp, math	3500	x40
1761F1	Anti-median (Easy Version) dp, math	3100	x124
1759E	The Humanoid brute force, dp, sortings	1500	x6801
1753C	Wish I Knew How to Sort dp, math, probabilities	2000	x2921
1753A2	Make Nonzero Sum (hard version) constructive algorithms, dp, greedy	1500	x7675
1753A1	Make Nonzero Sum (easy version) constructive algorithms, dp, greedy	1300	x11452
1750H	BinaryStringForces constructive algorithms, data structures, dp	3500	x46
1750G	Doping combinatorics, dp, math	3300	x103
1750F	Majority combinatorics, dp, math, strings	2700	x479
1750E	Bracket Cost binary search, data structures, divide and conquer, dp, greedy, strings	2400	x1090
1749D	Counting Arrays combinatorics, dp, math, number theory	1900	x4219
1748E	Yet Another Array Counting Problem binary search, data structures, divide and conquer, dp, flows, math, trees	2300	x1254
1748C	Zero-Sum Prefixes brute force, data structures, dp, greedy, implementation	1600	x7703
1747E	List Generation combinatorics, dp, math	2900	x372
1746G	Olympiad Training binary search, data structures, dp, flows, geometry, implementation, sortings	3500	x68
1746E2	Joking (Hard Version) dp, interactive	3200	x251
1746D	Paths on the Tree dfs and similar, dp, greedy, sortings, trees	1900	x3685
1743G	Antifibonacci Cut bitmasks, combinatorics, constructive algorithms, data structures, dp, hashing, math	3000	x179
1743F	Intersection and Union data structures, dp, matrices, probabilities	2300	x1153
1743E	FTL binary search, dp	2400	x1181
1743D	Problem with Random Tests brute force, dp, greedy, probabilities	1700	x5951
1743C	Save the Magazines constructive algorithms, dp, greedy	1100	x15743
1741G	Kirill and Company bitmasks, brute force, dfs and similar, dp, flows, graphs, shortest paths	2200	x1072
1741E	Sending a Sequence Over the Network dp	1600	x7204
1740I	Arranging Crystal Balls data structures, divide and conquer, divide and conquer, dp, geometry, graphs, number theory	3500	x53
1740F	Conditional Mix combinatorics, dp, math	2600	x552
1740E	Hanging Hearts constructive algorithms, data structures, dfs and similar, dp, greedy, trees	1800	x3140
1739F	Keyboard Design bitmasks, data structures, dp, string suffix structures, strings	2600	x378
1739E	Cleaning Robot bitmasks, dp	2400	x935
1739C	Card Game combinatorics, constructive algorithms, dp, games	1500	x7135
1738G	Anti-Increasing Addicts constructive algorithms, dp, greedy, math	2900	x285
1738E	Balance Addicts combinatorics, dp, math, two pointers	2300	x1204
1738C	Even Number Addicts dp, games, greedy, math	1500	x8187
1737E	Ela Goes Hiking combinatorics, dp, math, probabilities	2500	x749
1737D	Ela and the Wiring Wizard brute force, dp, graphs, greedy, implementation, shortest paths	2200	x1597
1736E	Swap and Take dp, greedy	2600	x443
1736C2	Good Subarrays (Hard Version) binary search, data structures, dp, two pointers	2400	x992
1734F	Zeros and Ones bitmasks, divide and conquer, dp, math	2500	x585
1734D	Slime Escape data structures, dp, greedy, two pointers	1800	x4806
1733E	Conveyor constructive algorithms, dp, math	2700	x872
1733D2	Zero-One (Hard Version) dp, greedy	2000	x3251
1732E	Location data structures, dp, math, number theory	2800	x285
1732B	Ugu brute force, dp, greedy, implementation	900	x11287
1731F	Function Sum brute force, combinatorics, dp, fft, math	2500	x479
1731E	Graph Cost dp, greedy, math, number theory	2000	x1979
1731D	Valiant's New Map binary search, brute force, data structures, dp, two pointers	1700	x5031
1730F	Almost Sorted bitmasks, data structures, dp	2700	x283
1729G	Cut Substrings combinatorics, dp, hashing, strings, two pointers	2100	x1669
1728G	Illumination binary search, bitmasks, brute force, combinatorics, dp, math, two pointers	2700	x302
1728D	Letter Picking constructive algorithms, dp, games, two pointers	1800	x5450
1725M	Moving Both Hands dp, graphs, shortest paths	1800	x1870
1725J	Journey dp, trees	2500	x261
1725E	Electrical Efficiency combinatorics, data structures, dp, math, number theory, trees	2500	x259
1722E	Counting Rectangles brute force, data structures, dp, implementation	1600	x7454
1721E	Prefix Function Queries dfs and similar, dp, hashing, string suffix structures, strings, trees	2200	x1448
1720D2	Xor-Subsequence (hard version) bitmasks, data structures, dp, strings, trees	2400	x1422

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