Problemset - Codeforces

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Educational Codeforces Round 166 (Rated for Div. 2)
29:52:35
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Problems

#	Name
1733C	Parity Shuffle Sorting constructive algorithms, sortings	1300	x15164
1733A	Consecutive Sum greedy, sortings	800	x20685
1730C	Minimum Notation data structures, greedy, math, sortings	1200	x16113
1730A	Planets data structures, greedy, sortings	800	x22575
1729D	Friends and the Restaurant greedy, sortings, two pointers	1200	x19052
1728C	Digital Logarithm data structures, greedy, sortings	1400	x15361
1728A	Colored Balls: Revisited brute force, greedy, implementation, sortings	800	x24395
1726G	A Certain Magical Party combinatorics, data structures, greedy, sortings	3300	x285
1725F	Field Photography bitmasks, data structures, sortings	2100	x942
1725B	Basketball Together binary search, greedy, sortings	1000	x11929
1722D	Line greedy, sortings	1100	x22390
1721D	Maximum AND bitmasks, dfs and similar, divide and conquer, greedy, sortings	1800	x6355
1720B	Interesting Sum brute force, data structures, greedy, math, sortings	800	x20797
1713B	Optimal Reduction constructive algorithms, sortings	1000	x20770
1712C	Sort Zero greedy, sortings	1100	x19291
1707C	DFS Trees dfs and similar, dsu, graphs, greedy, sortings, trees	2400	x1401
1707B	Difference Array brute force, data structures, implementation, sortings	1900	x5565
1705D	Mark and Lightbulbs combinatorics, constructive algorithms, greedy, math, sortings	1800	x6128
1705A	Mark the Photographer greedy, sortings	800	x24851
1704C	Virus greedy, implementation, sortings	1200	x14585
1703F	Yet Another Problem About Pairs Satisfying an Inequality binary search, data structures, dp, greedy, sortings	1300	x18416
1701D	Permutation Restoration binary search, data structures, greedy, math, sortings, two pointers	1900	x5513
1698E	PermutationForces II brute force, combinatorics, greedy, sortings, trees, two pointers	2300	x1583
1697B	Promo greedy, sortings	900	x25633
1692G	2^Sort data structures, dp, sortings, two pointers	1400	x16160
1692B	All Distinct greedy, sortings	800	x32954
1691E	Number of Groups data structures, dfs and similar, dsu, graphs, greedy, sortings	2300	x1760
1690G	Count the Trains binary search, data structures, greedy, sortings	2000	x3271
1689A	Lex String brute force, greedy, implementation, sortings, two pointers	800	x16406
1688B	Patchouli's Magical Talisman bitmasks, constructive algorithms, greedy, sortings	800	x17904
1687C	Sanae and Giant Robot binary search, brute force, data structures, dsu, greedy, sortings	2500	x1345
1687B	Railway System constructive algorithms, graphs, greedy, interactive, sortings	1700	x3498
1685B	Linguistics greedy, implementation, sortings, strings	2000	x3178
1685A	Circular Local MiniMax constructive algorithms, greedy, sortings	1100	x16552
1684D	Traps constructive algorithms, greedy, sortings	1700	x9361
1684C	Column Swapping brute force, constructive algorithms, greedy, implementation, sortings	1400	x12064
1682F	MCMF? data structures, flows, graphs, greedy, sortings, two pointers	2700	x288
1682E	Unordered Swaps constructive algorithms, dfs and similar, graphs, greedy, math, sortings, trees	2700	x563
1682B	AND Sorting bitmasks, constructive algorithms, sortings	1100	x17385
1681C	Double Sort implementation, sortings	1200	x17034
1676H2	Maximum Crossings (Hard Version) data structures, divide and conquer, sortings	1500	x10124
1676F	Longest Strike data structures, greedy, implementation, sortings, two pointers	1300	x15941
1676E	Eating Queries binary search, greedy, sortings	1100	x24832
1676B	Equal Candies greedy, math, sortings	800	x45555
1674D	A-B-C Sort constructive algorithms, implementation, sortings	1200	x15831
1671E	Preorder combinatorics, divide and conquer, dp, dsu, hashing, sortings, trees	2100	x2655
1671B	Consecutive Points Segment brute force, math, sortings	1000	x18163
1670A	Prof. Slim greedy, implementation, sortings	800	x15258
1669B	Triple implementation, sortings	800	x40293
1668B	Social Distance greedy, math, sortings	900	x16363
1665C	Tree Infection binary search, greedy, sortings, trees	1600	x8081
1665B	Array Cloning Technique constructive algorithms, greedy, sortings	900	x18900
1662N	Drone Photo combinatorics, math, sortings		x697
1662I	Ice Cream Shop brute force, implementation, sortings		x1982
1658E	Gojou and Matrix Game data structures, dp, games, hashing, implementation, math, number theory, sortings	2500	x1024
1657D	For Gamers. By Gamers. binary search, brute force, greedy, math, sortings	2000	x4731
1656F	Parametric MST binary search, constructive algorithms, graphs, greedy, math, sortings	2600	x997
1656C	Make Equal With Mod constructive algorithms, math, number theory, sortings	1200	x18612
1656A	Good Pairs math, sortings	800	x19305
1654F	Minimal String Xoration bitmasks, data structures, divide and conquer, greedy, hashing, sortings, strings	2800	x1061
1654C	Alice and the Cake data structures, greedy, implementation, sortings	1400	x13195
1654A	Maximum Cake Tastiness brute force, greedy, implementation, sortings	800	x18459
1650E	Rescheduling the Exam binary search, data structures, greedy, implementation, math, sortings	1900	x4031
1650C	Weight of the System of Nested Segments greedy, hashing, implementation, sortings	1200	x16449
1648A	Weird Sum combinatorics, data structures, geometry, math, matrices, sortings	1400	x11897
1646B	Quality vs Quantity brute force, constructive algorithms, greedy, sortings, two pointers	800	x20905
1641C	Anonymity Is Important binary search, brute force, data structures, dsu, greedy, sortings	2200	x2344
1641B	Repetitions Decoding constructive algorithms, implementation, sortings	2000	x3738
1641A	Great Sequence brute force, greedy, sortings	1200	x17570
1638B	Odd Swap Sort data structures, math, sortings	1100	x20446
1637H	Minimize Inversions Number data structures, greedy, math, sortings	3500	x300
1637A	Sorting Parts brute force, sortings	800	x22106
1635E	Cars 2-sat, constructive algorithms, dfs and similar, dsu, graphs, greedy, sortings	2200	x2176
1633E	Spanning Tree Queries binary search, data structures, dfs and similar, dsu, graphs, greedy, math, sortings, trees	2400	x1460
1630C	Paint the Middle dp, greedy, sortings, two pointers	2200	x2852
1629A	Download More RAM brute force, greedy, sortings	800	x28584
1628F	Spaceship Crisis Management binary search, data structures, geometry, sortings	3500	x84
1627B	Not Sitting games, greedy, sortings	1300	x16311
1626A	Equidistant Letters constructive algorithms, sortings	800	x28390
1625D	Binary Spiders bitmasks, data structures, implementation, math, sortings, trees	2300	x1974
1625B	Elementary Particles brute force, greedy, sortings	1100	x15886
1624D	Palindromes Coloring binary search, greedy, sortings, strings	1400	x16344
1623B	Game on Ranges brute force, dfs and similar, implementation, sortings	1100	x13921
1622C	Set or Decrease binary search, brute force, greedy, sortings	1600	x12462
1622B	Berland Music data structures, greedy, math, sortings	1000	x20585
1621E	New School binary search, data structures, dp, greedy, implementation, sortings	2300	x1724
1619G	Unusual Minesweeper binary search, dfs and similar, dsu, greedy, sortings	2000	x2287
1619E	MEX and Increments constructive algorithms, data structures, dp, greedy, implementation, math, sortings	1700	x8739
1619D	New Year's Problem binary search, greedy, sortings	1800	x7305
1618G	Trader Problem data structures, dsu, greedy, sortings	2200	x1485
1618A	Polycarp and Sums of Subsequences math, sortings	800	x31681
1617C	Paprika and Permutation binary search, greedy, math, sortings	1300	x14641
1617A	Forbidden Subsequence constructive algorithms, greedy, sortings, strings	800	x16117
1615E	Purple Crayon data structures, dfs and similar, games, graphs, greedy, math, sortings, trees	2400	x1408
1614B	Divan and a New Project constructive algorithms, sortings	1000	x18030
1613B	Absent Remainder greedy, implementation, sortings	1000	x21235
1612G	Max Sum Array combinatorics, constructive algorithms, greedy, sortings	2500	x817
1612E	Messages brute force, dp, greedy, probabilities, sortings	2000	x2394
1608E	The Cells on the Paper binary search, implementation, sortings	2800	x425
1607H	Banquet Preparations 2 greedy, sortings, two pointers	2200	x1200