Problemset - Codeforces

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Codeforces Round 997 (Div. 2)
42:52:17
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Problems

#	Name
1699C	The Third Problem combinatorics, constructive algorithms, math	1700	x9956
1698D	Fixed Point Guessing binary search, constructive algorithms, interactive	1600	x9807
1698C	3SUM Closure brute force, data structures	1300	x18769
1697C	awoo's Favorite Problem binary search, constructive algorithms, data structures, greedy, implementation, strings, two pointers	1400	x14674
1696C	Fishingprince Plays With Array constructive algorithms, greedy, implementation, math	1400	x11850
1695C	Zero Path brute force, data structures, dp, graphs, greedy, shortest paths	1700	x11217
1693B	Fake Plastic Trees dfs and similar, dp, greedy, trees	1700	x8706
1693A	Directional Increase greedy	1300	x16437
1692H	Gambling data structures, dp, greedy, math	1700	x7702
1692G	2^Sort data structures, dp, sortings, two pointers	1400	x18876
1692F	3SUM brute force, math	1300	x23615
1691C	Sum of Substrings brute force, constructive algorithms, greedy, math, strings	1400	x15977
1690F	Shifting String graphs, math, number theory, strings	1700	x7333
1690E	Price Maximization binary search, greedy, math, two pointers	1500	x15546
1689C	Infected Tree dfs and similar, dp, trees	1600	x11551
1688C	Manipulating History constructive algorithms, greedy, strings	1700	x8290
1687B	Railway System constructive algorithms, graphs, greedy, interactive, sortings	1700	x3727
1687A	The Enchanted Forest brute force, greedy	1600	x10556
1684D	Traps constructive algorithms, greedy, sortings	1700	x9919
1684C	Column Swapping brute force, constructive algorithms, greedy, implementation, sortings	1400	x12542
1682C	LIS or Reverse LIS? constructive algorithms, greedy, implementation, math	1400	x15158
1681D	Required Length brute force, dfs and similar, dp, hashing, shortest paths	1700	x9849
1680C	Binary String binary search, greedy, strings, two pointers	1600	x10151
1679C	Rooks Defenders data structures, implementation	1400	x10586
1677B	Tokitsukaze and Meeting data structures, implementation, math	1700	x4265
1677A	Tokitsukaze and Strange Inequality brute force, data structures, dp	1600	x8608
1676H2	Maximum Crossings (Hard Version) data structures, divide and conquer, sortings	1500	x11197
1676H1	Maximum Crossings (Easy Version) brute force	1400	x14539
1676G	White-Black Balanced Subtrees dfs and similar, dp, graphs, trees	1300	x16584
1676F	Longest Strike data structures, greedy, implementation, sortings, two pointers	1300	x17514
1675E	Replace With the Previous, Minimize dsu, greedy, strings	1500	x10935
1675D	Vertical Paths graphs, implementation, trees	1300	x13333
1673C	Palindrome Basis brute force, dp, math, number theory	1500	x13370
1672D	Cyclic Rotation constructive algorithms, greedy, implementation, two pointers	1700	x6412
1671D	Insert a Progression brute force, constructive algorithms, greedy	1600	x7850
1670D	Very Suspicious binary search, brute force, geometry, greedy, implementation, math	1700	x5241
1670C	Where is the Pizza? data structures, dfs and similar, dsu, graphs, implementation, math	1400	x10141
1669H	Maximal AND bitmasks, greedy, math	1300	x20106
1667A	Make it Increasing brute force, greedy, math	1300	x14887
1665C	Tree Infection binary search, greedy, sortings, trees	1600	x8541
1661C	Water the Trees binary search, greedy, math	1700	x9571
1661B	Getting Zero bitmasks, brute force, dfs and similar, dp, graphs, greedy, shortest paths	1300	x18255
1660F1	Promising String (easy version) brute force, implementation, math, strings	1700	x7420
1660E	Matrix and Shifts brute force, constructive algorithms, greedy, implementation	1600	x7480
1660D	Maximum Product Strikes Back brute force, implementation, math, two pointers	1600	x8966
1660C	Get an Even String dp, greedy, strings	1300	x19946
1659C	Line Empire binary search, brute force, dp, greedy, implementation, math	1500	x11033
1659B	Bit Flipping bitmasks, constructive algorithms, greedy, strings	1300	x11129
1658D1	388535 (Easy Version) bitmasks, math	1600	x9254
1658C	Shinju and the Lost Permutation constructive algorithms, math	1700	x9488
1654C	Alice and the Cake data structures, greedy, implementation, sortings	1400	x13693
1651C	Fault-tolerant Network brute force, data structures, implementation	1500	x10904
1650D	Twist the Permutation brute force, constructive algorithms, implementation, math	1300	x13211
1649B	Game of Ball Passing greedy, implementation	1300	x13250
1648A	Weird Sum combinatorics, data structures, geometry, math, matrices, sortings	1400	x13536
1647C	Madoka and Childish Pranks constructive algorithms, greedy	1300	x12790
1646C	Factorials and Powers of Two bitmasks, brute force, constructive algorithms, dp, math	1500	x14733
1644D	Cross Coloring data structures, implementation, math	1700	x7390
1644C	Increase Subarray Sums brute force, dp, greedy, implementation	1400	x13975
1638C	Inversion Graph data structures, dsu, graphs, math	1300	x14889
1634B	Fortune Telling bitmasks, math	1400	x17307
1633D	Make Them Equal dp, greedy	1600	x14725
1632C	Strange Test binary search, bitmasks, brute force, dp, math	1600	x12952
1630A	And Matching bitmasks, constructive algorithms	1500	x14819
1628B	Peculiar Movie Preferences greedy, strings	1700	x11826
1628A	Meximum Array binary search, constructive algorithms, greedy, implementation, math, two pointers	1400	x15857
1627C	Not Assigning constructive algorithms, dfs and similar, number theory, trees	1400	x14804
1627B	Not Sitting games, greedy, sortings	1300	x16805
1626C	Monsters And Spells binary search, data structures, dp, greedy, implementation, math, two pointers	1700	x11088
1625C	Road Optimization dp	1700	x11018
1624D	Palindromes Coloring binary search, greedy, sortings, strings	1400	x17391
1623C	Balanced Stone Heaps binary search, greedy	1600	x12596
1622C	Set or Decrease binary search, brute force, greedy, sortings	1600	x13484
1621C	Hidden Permutations dfs and similar, interactive, math	1700	x7014
1621B	Integers Shop data structures, greedy, implementation	1500	x13642
1619E	MEX and Increments constructive algorithms, data structures, dp, greedy, implementation, math, sortings	1700	x9381
1618E	Singers' Tour constructive algorithms, math	1700	x7317
1618D	Array and Operations dp, greedy, math	1300	x19289
1617C	Paprika and Permutation binary search, greedy, math, sortings	1300	x15211
1616C	Representative Edges brute force, geometry, implementation, math	1500	x12417
1615C	Menorah brute force, graphs, greedy, math	1600	x8532
1615B	And It's Non-Zero bitmasks, greedy, math	1300	x16335
1614C	Divan and bitwise operations bitmasks, combinatorics, constructive algorithms, dp, math	1500	x10411
1612D	X-Magic Pair math, number theory	1600	x9421
1612C	Chat Ban binary search, math	1300	x18419
1611E1	Escape The Maze (easy version) dfs and similar, greedy, shortest paths, trees, two pointers	1700	x7462
1611D	Weights Assignment For Tree Edges constructive algorithms, trees	1500	x10043
1610C	Keshi Is Throwing a Party binary search, greedy	1600	x12178
1609D	Social Network dsu, graphs, greedy, implementation, trees	1600	x7434
1609C	Complex Market Analysis binary search, dp, implementation, number theory, schedules, two pointers	1400	x9862
1608C	Game Master data structures, dfs and similar, dp, graphs, greedy, two pointers	1700	x6818
1607E	Robot on the Board 1 implementation	1600	x9463
1607D	Blue-Red Permutation greedy, math, sortings	1300	x17112
1606C	Banknotes greedy, number theory	1400	x14343
1605C	Dominant Character brute force, greedy, implementation, strings	1400	x17284
1603B	Moderate Modular Mode constructive algorithms, math, number theory	1600	x13864
1603A	Di-visible Confusion constructive algorithms, math, number theory	1300	x16919
1601A	Array Elimination bitmasks, greedy, math, number theory	1300	x15395
1600J	Robot Factory bitmasks, dfs and similar	1400	x4038
1598D	Training Session combinatorics, data structures, geometry, implementation, math	1700	x8867