Problemset - Codeforces

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Codeforces Round 987 (Div. 2)
05:41:30
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Problems

#	Name
1660F1	Promising String (easy version) brute force, implementation, math, strings	1700	x7324
1660E	Matrix and Shifts brute force, constructive algorithms, greedy, implementation	1600	x7367
1660D	Maximum Product Strikes Back brute force, implementation, math, two pointers	1600	x8745
1660C	Get an Even String dp, greedy, strings	1300	x19691
1659D	Reverse Sort Sum constructive algorithms, data structures, greedy, implementation, math, two pointers	1900	x4038
1659C	Line Empire binary search, brute force, dp, greedy, implementation, math	1500	x10670
1659B	Bit Flipping bitmasks, constructive algorithms, greedy, strings	1300	x10998
1658D1	388535 (Easy Version) bitmasks, math	1600	x9154
1658C	Shinju and the Lost Permutation constructive algorithms, math	1700	x9387
1656D	K-good constructive algorithms, math, number theory	1900	x6902
1654C	Alice and the Cake data structures, greedy, implementation, sortings	1400	x13561
1651D	Nearest Excluded Points binary search, data structures, dfs and similar, graphs, shortest paths	1900	x5189
1651C	Fault-tolerant Network brute force, data structures, implementation	1500	x10765
1650E	Rescheduling the Exam binary search, data structures, greedy, implementation, math, sortings	1900	x4170
1650D	Twist the Permutation brute force, constructive algorithms, implementation, math	1300	x13103
1649B	Game of Ball Passing greedy, implementation	1300	x13109
1648C	Tyler and Strings combinatorics, data structures, implementation	1900	x2996
1648B	Integral Array brute force, constructive algorithms, data structures, math	1800	x6485
1648A	Weird Sum combinatorics, data structures, geometry, math, matrices, sortings	1400	x13119
1647D	Madoka and the Best School in Russia constructive algorithms, dp, math, number theory	1900	x5314
1647C	Madoka and Childish Pranks constructive algorithms, greedy	1300	x12651
1646C	Factorials and Powers of Two bitmasks, brute force, constructive algorithms, dp, math	1500	x14313
1644E	Expand the Path brute force, combinatorics, data structures, implementation, math	1900	x3123
1644D	Cross Coloring data structures, implementation, math	1700	x7305
1644C	Increase Subarray Sums brute force, dp, greedy, implementation	1400	x13859
1638C	Inversion Graph data structures, dsu, graphs, math	1300	x14763
1637D	Yet Another Minimization Problem dp, greedy, math	1800	x7807
1635D	Infinite Set bitmasks, dp, math, matrices, number theory, strings	1800	x6299
1634B	Fortune Telling bitmasks, math	1400	x16815
1633D	Make Them Equal dp, greedy	1600	x14258
1632C	Strange Test binary search, bitmasks, brute force, dp, math	1600	x12814
1630B	Range and Partition binary search, constructive algorithms, data structures, greedy, two pointers	1800	x5795
1630A	And Matching bitmasks, constructive algorithms	1500	x14629
1628B	Peculiar Movie Preferences greedy, strings	1700	x11685
1628A	Meximum Array binary search, constructive algorithms, greedy, implementation, math, two pointers	1400	x15734
1627D	Not Adding brute force, dp, math, number theory	1900	x8374
1627C	Not Assigning constructive algorithms, dfs and similar, number theory, trees	1400	x14618
1627B	Not Sitting games, greedy, sortings	1300	x16687
1626C	Monsters And Spells binary search, data structures, dp, greedy, implementation, math, two pointers	1700	x10974
1625C	Road Optimization dp	1700	x10807
1624G	MinOr Tree bitmasks, dfs and similar, dsu, graphs, greedy	1900	x6016
1624D	Palindromes Coloring binary search, greedy, sortings, strings	1400	x17156
1623C	Balanced Stone Heaps binary search, greedy	1600	x12272
1622C	Set or Decrease binary search, brute force, greedy, sortings	1600	x13186
1621C	Hidden Permutations dfs and similar, interactive, math	1700	x6942
1621B	Integers Shop data structures, greedy, implementation	1500	x13473
1620E	Replace the Numbers constructive algorithms, data structures, dsu, implementation	1900	x8345
1620C	BA-String brute force, dp, greedy, implementation, math	1800	x6601
1619E	MEX and Increments constructive algorithms, data structures, dp, greedy, implementation, math, sortings	1700	x9265
1619D	New Year's Problem binary search, greedy, sortings	1800	x7625
1618E	Singers' Tour constructive algorithms, math	1700	x7249
1618D	Array and Operations dp, greedy, math	1300	x19075
1617D1	Too Many Impostors (easy version) constructive algorithms, implementation, interactive	1800	x4726
1617C	Paprika and Permutation binary search, greedy, math, sortings	1300	x15058
1616C	Representative Edges brute force, geometry, implementation, math	1500	x12294
1615C	Menorah brute force, graphs, greedy, math	1600	x8412
1615B	And It's Non-Zero bitmasks, greedy, math	1300	x16095
1614C	Divan and bitwise operations bitmasks, combinatorics, constructive algorithms, dp, math	1500	x10315
1613D	MEX Sequences dp, math	1900	x4734
1612D	X-Magic Pair math, number theory	1600	x9277
1612C	Chat Ban binary search, math	1300	x17787
1611F	ATM and Students binary search, data structures, two pointers	1800	x6505
1611E2	Escape The Maze (hard version) dfs and similar, dp, greedy, shortest paths, trees	1900	x3850
1611E1	Escape The Maze (easy version) dfs and similar, greedy, shortest paths, trees, two pointers	1700	x7366
1611D	Weights Assignment For Tree Edges constructive algorithms, trees	1500	x9943
1610C	Keshi Is Throwing a Party binary search, greedy	1600	x11722
1609D	Social Network dsu, graphs, greedy, implementation, trees	1600	x7352
1609C	Complex Market Analysis binary search, dp, implementation, number theory, schedules, two pointers	1400	x9793
1608C	Game Master data structures, dfs and similar, dp, graphs, greedy, two pointers	1700	x6721
1607E	Robot on the Board 1 implementation	1600	x9362
1607D	Blue-Red Permutation greedy, math, sortings	1300	x16939
1606C	Banknotes greedy, number theory	1400	x14237
1605C	Dominant Character brute force, greedy, implementation, strings	1400	x17112
1603B	Moderate Modular Mode constructive algorithms, math, number theory	1600	x13655
1603A	Di-visible Confusion constructive algorithms, math, number theory	1300	x16734
1601B	Frog Traveler data structures, dfs and similar, dp, graphs, shortest paths, two pointers	1900	x5012
1601A	Array Elimination bitmasks, greedy, math, number theory	1300	x14837
1600J	Robot Factory bitmasks, dfs and similar	1400	x3964
1600E	Array Game games, greedy, two pointers	1900	x2121
1598D	Training Session combinatorics, data structures, geometry, implementation, math	1700	x8774
1594E1	Rubik's Cube Coloring (easy version) combinatorics, math	1300	x11234
1594D	The Number of Imposters constructive algorithms, dfs and similar, dp, dsu, graphs	1700	x7584
1593E	Gardener and Tree brute force, data structures, dfs and similar, greedy, implementation, trees	1600	x12564
1593D2	Half of Same brute force, math, number theory	1900	x5075
1592C	Bakry and Partitioning bitmasks, constructive algorithms, dfs and similar, dp, graphs, trees	1700	x8073
1585D	Yet Another Sorting Problem data structures, math	1900	x3876
1585C	Minimize Distance greedy	1300	x12123
1583D	Omkar and the Meaning of Life constructive algorithms, greedy, interactive	1800	x5424
1583C	Omkar and Determination data structures, dp	1700	x6973
1582F1	Korney Korneevich and XOR (easy version) bitmasks, dp, greedy	1800	x5681
1582D	Vupsen, Pupsen and 0 constructive algorithms, math	1600	x10592
1580A	Portal brute force, data structures, dp, greedy, implementation	1700	x3696
1579F	Array Stabilization (AND version) brute force, graphs, math, number theory, shortest paths	1700	x4826
1579E2	Array Optimization by Deque data structures, greedy	1700	x6710
1579D	Productive Meeting constructive algorithms, graphs, greedy	1400	x16175
1579C	Ticks greedy, implementation	1500	x10623
1578H	Higher Order Functions implementation, strings	1700	x2036
1575J	Jeopardy of Dropped Balls binary search, brute force, dsu, implementation	1500	x3839
1575D	Divisible by Twenty-Five brute force, dfs and similar, dp	1800	x2566
1574C	Slay the Dragon binary search, greedy, sortings, ternary search	1300	x17230