Problemset - Codeforces

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Pinely Round 4 (Div. 1 + Div. 2)
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Problems

#	Name
1677A	Tokitsukaze and Strange Inequality brute force, data structures, dp	1600	x8305
1676H2	Maximum Crossings (Hard Version) data structures, divide and conquer, sortings	1500	x10448
1676H1	Maximum Crossings (Easy Version) brute force	1400	x13707
1676G	White-Black Balanced Subtrees dfs and similar, dp, graphs, trees	1300	x14961
1676F	Longest Strike data structures, greedy, implementation, sortings, two pointers	1300	x16324
1675F	Vlad and Unfinished Business dfs and similar, dp, greedy, trees	1800	x5181
1675E	Replace With the Previous, Minimize dsu, greedy, strings	1500	x10439
1675D	Vertical Paths graphs, implementation, trees	1300	x12836
1674F	Desktop Rearrangement data structures, greedy, implementation	1800	x4968
1673D	Lost Arithmetic Progression combinatorics, math, number theory	1900	x3258
1673C	Palindrome Basis brute force, dp, math, number theory	1500	x12341
1672D	Cyclic Rotation constructive algorithms, greedy, implementation, two pointers	1700	x6151
1671D	Insert a Progression brute force, constructive algorithms, greedy	1600	x7521
1670D	Very Suspicious binary search, brute force, geometry, greedy, implementation, math	1700	x5042
1670C	Where is the Pizza? data structures, dfs and similar, dsu, graphs, implementation, math	1400	x9784
1669H	Maximal AND bitmasks, greedy, math	1300	x17596
1667A	Make it Increasing brute force, greedy, math	1300	x14568
1666L	Labyrinth dfs and similar, graphs	1800	x3033
1666C	Connect the Points brute force, constructive algorithms, geometry	1800	x3127
1665C	Tree Infection binary search, greedy, sortings, trees	1600	x8210
1661D	Progressions Covering data structures, greedy	1900	x4637
1661C	Water the Trees binary search, greedy, math	1700	x9192
1661B	Getting Zero bitmasks, brute force, dfs and similar, dp, graphs, greedy, shortest paths	1300	x17404
1660F1	Promising String (easy version) brute force, implementation, math, strings	1700	x7141
1660E	Matrix and Shifts brute force, constructive algorithms, greedy, implementation	1600	x7203
1660D	Maximum Product Strikes Back brute force, implementation, math, two pointers	1600	x8470
1660C	Get an Even String dp, greedy, strings	1300	x19224
1659D	Reverse Sort Sum constructive algorithms, data structures, greedy, implementation, math, two pointers	1900	x3956
1659C	Line Empire binary search, brute force, dp, greedy, implementation, math	1500	x10156
1659B	Bit Flipping bitmasks, constructive algorithms, greedy, strings	1300	x10807
1658D1	388535 (Easy Version) bitmasks, math	1600	x8943
1658C	Shinju and the Lost Permutation constructive algorithms, math	1700	x9206
1656D	K-good constructive algorithms, math, number theory	1900	x6751
1654C	Alice and the Cake data structures, greedy, implementation, sortings	1400	x13348
1651D	Nearest Excluded Points binary search, data structures, dfs and similar, graphs, shortest paths	1900	x4986
1651C	Fault-tolerant Network brute force, data structures, implementation	1500	x10612
1650E	Rescheduling the Exam binary search, data structures, greedy, implementation, math, sortings	1900	x4078
1650D	Twist the Permutation brute force, constructive algorithms, implementation, math	1300	x12869
1649B	Game of Ball Passing greedy, implementation	1300	x12902
1648C	Tyler and Strings combinatorics, data structures, implementation	1900	x2912
1648B	Integral Array brute force, constructive algorithms, data structures, math	1800	x6321
1648A	Weird Sum combinatorics, data structures, geometry, math, matrices, sortings	1400	x12345
1647D	Madoka and the Best School in Russia constructive algorithms, dp, math, number theory	1900	x5218
1647C	Madoka and Childish Pranks constructive algorithms, greedy	1300	x12500
1646C	Factorials and Powers of Two bitmasks, brute force, constructive algorithms, dp, math	1500	x13724
1644E	Expand the Path brute force, combinatorics, data structures, implementation, math	1900	x3060
1644D	Cross Coloring data structures, implementation, math	1700	x7112
1644C	Increase Subarray Sums brute force, dp, greedy, implementation	1400	x13591
1638C	Inversion Graph data structures, dsu, graphs, math	1300	x14561
1637D	Yet Another Minimization Problem dp, greedy, math	1800	x7577
1635D	Infinite Set bitmasks, dp, math, matrices, number theory, strings	1800	x6147
1634B	Fortune Telling bitmasks, math	1400	x16149
1633D	Make Them Equal dp, greedy	1600	x13584
1632C	Strange Test binary search, bitmasks, brute force, dp, math	1600	x12544
1630B	Range and Partition binary search, constructive algorithms, data structures, greedy, two pointers	1800	x5649
1630A	And Matching bitmasks, constructive algorithms	1500	x14345
1628B	Peculiar Movie Preferences greedy, strings	1700	x11393
1628A	Meximum Array binary search, constructive algorithms, greedy, implementation, math, two pointers	1400	x15427
1627D	Not Adding brute force, dp, math, number theory	1900	x8064
1627C	Not Assigning constructive algorithms, dfs and similar, number theory, trees	1400	x14290
1627B	Not Sitting games, greedy, sortings	1300	x16455
1626C	Monsters And Spells binary search, data structures, dp, greedy, implementation, math, two pointers	1700	x10786
1625C	Road Optimization dp	1700	x10399
1624G	MinOr Tree bitmasks, dfs and similar, dsu, graphs, greedy	1900	x5769
1624D	Palindromes Coloring binary search, greedy, sortings, strings	1400	x16646
1623C	Balanced Stone Heaps binary search, greedy	1600	x11662
1622C	Set or Decrease binary search, brute force, greedy, sortings	1600	x12722
1621C	Hidden Permutations dfs and similar, interactive, math	1700	x6824
1621B	Integers Shop data structures, greedy, implementation	1500	x13266
1620E	Replace the Numbers constructive algorithms, data structures, dsu, implementation	1900	x8041
1620C	BA-String brute force, dp, greedy, implementation, math	1800	x6476
1619E	MEX and Increments constructive algorithms, data structures, dp, greedy, implementation, math, sortings	1700	x8997
1619D	New Year's Problem binary search, greedy, sortings	1800	x7427
1618E	Singers' Tour constructive algorithms, math	1700	x7076
1618D	Array and Operations dp, greedy, math	1300	x18646
1617D1	Too Many Impostors (easy version) constructive algorithms, implementation, interactive	1800	x4609
1617C	Paprika and Permutation binary search, greedy, math, sortings	1300	x14811
1616C	Representative Edges brute force, geometry, implementation, math	1500	x12120
1615C	Menorah brute force, graphs, greedy, math	1600	x8271
1615B	And It's Non-Zero bitmasks, greedy, math	1300	x15586
1614C	Divan and bitwise operations bitmasks, combinatorics, constructive algorithms, dp, math	1500	x10105
1613D	MEX Sequences dp, math	1900	x4520
1612D	X-Magic Pair math, number theory	1600	x8995
1612C	Chat Ban binary search, math	1300	x16581
1611F	ATM and Students binary search, data structures, two pointers	1800	x6333
1611E2	Escape The Maze (hard version) dfs and similar, dp, greedy, shortest paths, trees	1900	x3739
1611E1	Escape The Maze (easy version) dfs and similar, greedy, shortest paths, trees, two pointers	1700	x7132
1611D	Weights Assignment For Tree Edges constructive algorithms, trees	1500	x9714
1610C	Keshi Is Throwing a Party binary search, greedy	1600	x11154
1609D	Social Network dsu, graphs, greedy, implementation, trees	1600	x7182
1609C	Complex Market Analysis binary search, dp, implementation, number theory, schedules, two pointers	1400	x9629
1608C	Game Master data structures, dfs and similar, dp, graphs, greedy, two pointers	1700	x6549
1607E	Robot on the Board 1 implementation	1600	x9204
1607D	Blue-Red Permutation greedy, math, sortings	1300	x16634
1606C	Banknotes greedy, number theory	1400	x13981
1605C	Dominant Character brute force, greedy, implementation, strings	1400	x16654
1603B	Moderate Modular Mode constructive algorithms, math, number theory	1600	x13312
1603A	Di-visible Confusion constructive algorithms, math, number theory	1300	x16411
1601B	Frog Traveler data structures, dfs and similar, dp, graphs, shortest paths, two pointers	1900	x4884
1601A	Array Elimination bitmasks, greedy, math, number theory	1300	x14015