Problemset - Codeforces

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Codeforces Round 968 (Div. 2)
29:17:13
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bitmasks

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Problems

#	Name
1995D	Cases bitmasks, brute force, dp, strings	2300	x2035
1994G	Minecraft bitmasks, brute force, dp, graphs, math	2600	x1083
1993E	Xor-Grid Problem bitmasks, constructive algorithms, dp, implementation	2700	x414
1991H	Prime Split Game bitmasks, dp, fft, games, math, number theory	3300	x157
1990D	Grid Puzzle bitmasks, brute force, dp, greedy, implementation	1800	x5564
1983G	Your Loss bitmasks, brute force, dp, trees	3000	x184
1982E	Number of k-good subarrays bitmasks, brute force, combinatorics, divide and conquer, dp, math, meet-in-the-middle	2300	x1448
1979D	Fixing a Binary String bitmasks, brute force, constructive algorithms, dp, greedy, hashing, strings	1800	x6168
1975F	Set bitmasks, brute force, combinatorics, dfs and similar, divide and conquer, dp, math	2600	x749
1973F	Maximum GCD Sum Queries bitmasks, brute force, dp, implementation, number theory	3100	x190
1970G3	Min-Fund Prison (Hard) bitmasks, dfs and similar, dp, graphs, trees	2400	x297
1967C	Fenwick Tree bitmasks, brute force, combinatorics, data structures, dp, math, trees	2300	x1596
1957D	A BIT of an Inequality bitmasks, brute force, dp, math	1900	x4270
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x3713
1955H	The Most Reckless Defense bitmasks, brute force, constructive algorithms, dp, flows, graph matchings, shortest paths	2300	x1190
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x4130
1930D2	Sum over all Substrings (Hard Version) bitmasks, divide and conquer, dp, dsu, greedy, implementation, strings	2100	x2550
1929E	Sasha and the Happy Tree Cutting bitmasks, brute force, dfs and similar, dp, graphs, greedy, math, trees	2300	x1625
1926F	Vlad and Avoiding X bitmasks, brute force, dfs and similar, dp, implementation	2200	x1640
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x11433
1917F	Construct Tree bitmasks, constructive algorithms, dp, trees	2500	x941
1912K	Kim's Quest bitmasks, combinatorics, dp	1800	x2316
1903D2	Maximum And Queries (hard version) bitmasks, divide and conquer, dp, greedy	2500	x757
1900D	Small GCD bitmasks, brute force, dp, math, number theory	2000	x4046
1886E	I Wanna be the Team Leader bitmasks, constructive algorithms, dp, greedy, math, sortings, two pointers	2400	x1411
1882D	Tree XOR bitmasks, dfs and similar, dp, greedy, trees	1900	x5314
1879D	Sum of XOR Functions bitmasks, combinatorics, divide and conquer, dp, math	1700	x7191
1874B	Jellyfish and Math bitmasks, brute force, dfs and similar, dp, graphs, shortest paths	2400	x1119
1872E	Data Structures Fan binary search, bitmasks, data structures, dp	1500	x13177
1870E	Another MEX Problem bitmasks, brute force, dp, shortest paths	2300	x2314
1868B2	Candy Party (Hard Version) bitmasks, constructive algorithms, dp, greedy, implementation, math	2100	x2360
1863F	Divide, XOR, and Conquer bitmasks, dp, math	2600	x1109
1862F	Magic Will Save the World binary search, bitmasks, brute force, dp	1800	x6122
1856E2	PermuTree (hard version) bitmasks, dfs and similar, dp, fft, greedy, implementation, math, trees	2700	x1360
1854B	Earn or Unlock bitmasks, brute force, dp	2200	x3472
1848F	Vika and Wiki binary search, bitmasks, combinatorics, divide and conquer, dp, math	2400	x1511
1847C	Vampiric Powers, anyone? bitmasks, brute force, dp, greedy	1400	x12712
1846G	Rudolf and CodeVid-23 bitmasks, dp, graphs, greedy, shortest paths	1900	x4314
1842H	Tenzing and Random Real Numbers bitmasks, dp, graphs, math, probabilities	3000	x640
1829H	Don't Blame Me bitmasks, combinatorics, dp, math	1700	x7571
1826E	Walk the Runway bitmasks, brute force, data structures, dp, graphs, implementation, sortings	2400	x1571
1815D	XOR Counting bitmasks, combinatorics, dp, math	2600	x1111
1807G2	Subsequence Addition (Hard Version) bitmasks, dp, greedy, implementation, sortings	1100	x18909
1804H	Code Lock bitmasks, dp	3300	x182
1804E	Routing bitmasks, brute force, dfs and similar, dp, graphs	2400	x1414
1799H	Tree Cutting bitmasks, dfs and similar, dp	3200	x278
1789F	Serval and Brain Power bitmasks, brute force, dp, greedy, implementation, strings	2700	x700
1780F	Three Chairs bitmasks, brute force, combinatorics, data structures, dp, number theory, sortings	2300	x1440
1779F	Xorcerer's Stones bitmasks, constructive algorithms, dp, trees	2500	x1251
1777D	Score of a Tree bitmasks, combinatorics, dfs and similar, dp, math, probabilities, trees	1900	x3420
1773G	Game of Questions bitmasks, combinatorics, dp, fft, math, probabilities	2800	x354
1770F	Koxia and Sequence bitmasks, combinatorics, dp, math, number theory	3100	x656
1767E	Algebra Flash bitmasks, brute force, dp, graphs, math, meet-in-the-middle, trees	2500	x892
1743G	Antifibonacci Cut bitmasks, combinatorics, constructive algorithms, data structures, dp, hashing, math	3000	x254
1741G	Kirill and Company bitmasks, brute force, dfs and similar, dp, flows, graphs, shortest paths	2200	x1481
1739F	Keyboard Design bitmasks, data structures, dp, string suffix structures, strings	2600	x524
1739E	Cleaning Robot bitmasks, dp	2400	x1206
1734F	Zeros and Ones bitmasks, divide and conquer, dp, math	2500	x790
1730F	Almost Sorted bitmasks, data structures, dp	2700	x530
1728G	Illumination binary search, bitmasks, brute force, combinatorics, dp, math, two pointers	2700	x453
1720D2	Xor-Subsequence (hard version) bitmasks, data structures, dp, strings, trees	2400	x1808
1720D1	Xor-Subsequence (easy version) bitmasks, brute force, dp, strings, trees, two pointers	1800	x5901
1716E	Swap and Maximum Block bitmasks, data structures, dfs and similar, divide and conquer, dp	2500	x1058
1713F	Lost Array bitmasks, combinatorics, constructive algorithms, dp, math	2900	x529
1710C	XOR Triangle bitmasks, brute force, constructive algorithms, dp, greedy, math	2500	x1344
1709F	Multiset of Strings bitmasks, brute force, dp, fft, flows, graphs, math, meet-in-the-middle, trees	2500	x540
1707F	Bugaboo bitmasks, constructive algorithms, dp, number theory	3500	x148
1703G	Good Key, Bad Key bitmasks, brute force, dp, greedy, math	1600	x10495
1680E	Moving Chips bitmasks, dp, greedy	2000	x3725
1679F	Formalism for Formalism bitmasks, dp, math	2600	x519
1679E	Typical Party in Dorm bitmasks, combinatorics, dp, strings	2400	x1135
1670F	Jee, You See? bitmasks, combinatorics, dp	2400	x958
1661B	Getting Zero bitmasks, brute force, dfs and similar, dp, graphs, greedy, shortest paths	1300	x17544
1646C	Factorials and Powers of Two bitmasks, brute force, constructive algorithms, dp, math	1500	x13885
1635D	Infinite Set bitmasks, dp, math, matrices, number theory, strings	1800	x6193
1632C	Strange Test binary search, bitmasks, brute force, dp, math	1600	x12633
1620G	Subsequences Galore bitmasks, combinatorics, dp	2400	x882
1616H	Keep XOR Low bitmasks, combinatorics, data structures, divide and conquer, dp, math	3000	x900
1614C	Divan and bitwise operations bitmasks, combinatorics, constructive algorithms, dp, math	1500	x10157
1609E	William The Oblivious bitmasks, data structures, dp, matrices	2400	x2036
1598F	RBS binary search, bitmasks, brute force, data structures, dp	2400	x1403
1592C	Bakry and Partitioning bitmasks, constructive algorithms, dfs and similar, dp, graphs, trees	1700	x7860
1584F	Strange LCS bitmasks, dp, graphs, greedy, strings	2600	x920
1582F1	Korney Korneevich and XOR (easy version) bitmasks, dp, greedy	1800	x5482
1571E	Fix the String *special problem, bitmasks, dp, greedy	1700	x334
1567C	Carrying Conundrum bitmasks, combinatorics, dp, math	1600	x12082
1566C	MAX-MEX Cut bitmasks, constructive algorithms, dp, greedy	1000	x17420
1566B	MIN-MEX Cut bitmasks, constructive algorithms, dp, greedy	800	x19471
1560F2	Nearest Beautiful Number (hard version) bitmasks, brute force, constructive algorithms, dfs and similar, dp, greedy	2100	x4333
1557C	Moamen and XOR bitmasks, combinatorics, dp, math, matrices	1700	x8540
1556F	Sports Betting bitmasks, combinatorics, dp, graphs, math, probabilities	2500	x1212
1553C	Penalty bitmasks, brute force, dp, greedy	1200	x17709
1552D	Array Differentiation bitmasks, brute force, constructive algorithms, dfs and similar, dp, graphs, math	1800	x6926
1550E	Stringforces binary search, bitmasks, brute force, dp, strings, two pointers	2500	x1513
1533H	Submatrices *special problem, bitmasks, data structures, dp		x83
1530F	Bingo bitmasks, combinatorics, dp, math, probabilities	2600	x772
1523F	Favorite Game bitmasks, dp	3300	x417
1523D	Love-Hate bitmasks, brute force, dp, probabilities	2400	x2158
1519F	Chests and Keys bitmasks, brute force, dfs and similar, dp, flows	3200	x409
1516C	Baby Ehab Partitions Again bitmasks, constructive algorithms, dp, math	1700	x11817

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