Problemset - Codeforces

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Codeforces Round (Div. 2)
7 days

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Problems

#	Name
1634B	Fortune Telling bitmasks, math	1400	x16608
1633D	Make Them Equal dp, greedy	1600	x14051
1632C	Strange Test binary search, bitmasks, brute force, dp, math	1600	x12728
1630B	Range and Partition binary search, constructive algorithms, data structures, greedy, two pointers	1800	x5745
1630A	And Matching bitmasks, constructive algorithms	1500	x14538
1628B	Peculiar Movie Preferences greedy, strings	1700	x11607
1628A	Meximum Array binary search, constructive algorithms, greedy, implementation, math, two pointers	1400	x15618
1627D	Not Adding brute force, dp, math, number theory	1900	x8276
1627C	Not Assigning constructive algorithms, dfs and similar, number theory, trees	1400	x14530
1627B	Not Sitting games, greedy, sortings	1300	x16629
1626C	Monsters And Spells binary search, data structures, dp, greedy, implementation, math, two pointers	1700	x10909
1625C	Road Optimization dp	1700	x10673
1624G	MinOr Tree bitmasks, dfs and similar, dsu, graphs, greedy	1900	x5926
1624D	Palindromes Coloring binary search, greedy, sortings, strings	1400	x16996
1623C	Balanced Stone Heaps binary search, greedy	1600	x12151
1622C	Set or Decrease binary search, brute force, greedy, sortings	1600	x13087
1621C	Hidden Permutations dfs and similar, interactive, math	1700	x6905
1621B	Integers Shop data structures, greedy, implementation	1500	x13411
1620E	Replace the Numbers constructive algorithms, data structures, dsu, implementation	1900	x8264
1620C	BA-String brute force, dp, greedy, implementation, math	1800	x6567
1619E	MEX and Increments constructive algorithms, data structures, dp, greedy, implementation, math, sortings	1700	x9171
1619D	New Year's Problem binary search, greedy, sortings	1800	x7547
1618E	Singers' Tour constructive algorithms, math	1700	x7180
1618D	Array and Operations dp, greedy, math	1300	x18919
1617D1	Too Many Impostors (easy version) constructive algorithms, implementation, interactive	1800	x4680
1617C	Paprika and Permutation binary search, greedy, math, sortings	1300	x14986
1616C	Representative Edges brute force, geometry, implementation, math	1500	x12236
1615C	Menorah brute force, graphs, greedy, math	1600	x8373
1615B	And It's Non-Zero bitmasks, greedy, math	1300	x15955
1614C	Divan and bitwise operations bitmasks, combinatorics, constructive algorithms, dp, math	1500	x10247
1613D	MEX Sequences dp, math	1900	x4607
1612D	X-Magic Pair math, number theory	1600	x9141
1612C	Chat Ban binary search, math	1300	x17425
1611F	ATM and Students binary search, data structures, two pointers	1800	x6447
1611E2	Escape The Maze (hard version) dfs and similar, dp, greedy, shortest paths, trees	1900	x3818
1611E1	Escape The Maze (easy version) dfs and similar, greedy, shortest paths, trees, two pointers	1700	x7269
1611D	Weights Assignment For Tree Edges constructive algorithms, trees	1500	x9856
1610C	Keshi Is Throwing a Party binary search, greedy	1600	x11563
1609D	Social Network dsu, graphs, greedy, implementation, trees	1600	x7302
1609C	Complex Market Analysis binary search, dp, implementation, number theory, schedules, two pointers	1400	x9742
1608C	Game Master data structures, dfs and similar, dp, graphs, greedy, two pointers	1700	x6649
1607E	Robot on the Board 1 implementation	1600	x9310
1607D	Blue-Red Permutation greedy, math, sortings	1300	x16847
1606C	Banknotes greedy, number theory	1400	x14161
1605C	Dominant Character brute force, greedy, implementation, strings	1400	x16961
1603B	Moderate Modular Mode constructive algorithms, math, number theory	1600	x13549
1603A	Di-visible Confusion constructive algorithms, math, number theory	1300	x16639
1601B	Frog Traveler data structures, dfs and similar, dp, graphs, shortest paths, two pointers	1900	x4963
1601A	Array Elimination bitmasks, greedy, math, number theory	1300	x14607
1600J	Robot Factory bitmasks, dfs and similar	1400	x3919
1600E	Array Game games, greedy, two pointers	1900	x2100
1598D	Training Session combinatorics, data structures, geometry, implementation, math	1700	x8685
1594E1	Rubik's Cube Coloring (easy version) combinatorics, math	1300	x11093
1594D	The Number of Imposters constructive algorithms, dfs and similar, dp, dsu, graphs	1700	x7499
1593E	Gardener and Tree brute force, data structures, dfs and similar, greedy, implementation, trees	1600	x12412
1593D2	Half of Same brute force, math, number theory	1900	x5011
1592C	Bakry and Partitioning bitmasks, constructive algorithms, dfs and similar, dp, graphs, trees	1700	x7998
1585D	Yet Another Sorting Problem data structures, math	1900	x3852
1585C	Minimize Distance greedy	1300	x12016
1583D	Omkar and the Meaning of Life constructive algorithms, greedy, interactive	1800	x5384
1583C	Omkar and Determination data structures, dp	1700	x6936
1582F1	Korney Korneevich and XOR (easy version) bitmasks, dp, greedy	1800	x5589
1582D	Vupsen, Pupsen and 0 constructive algorithms, math	1600	x10523
1580A	Portal brute force, data structures, dp, greedy, implementation	1700	x3655
1579F	Array Stabilization (AND version) brute force, graphs, math, number theory, shortest paths	1700	x4787
1579E2	Array Optimization by Deque data structures, greedy	1700	x6655
1579D	Productive Meeting constructive algorithms, graphs, greedy	1400	x16052
1579C	Ticks greedy, implementation	1500	x10581
1578H	Higher Order Functions implementation, strings	1700	x2026
1575J	Jeopardy of Dropped Balls binary search, brute force, dsu, implementation	1500	x3809
1575D	Divisible by Twenty-Five brute force, dfs and similar, dp	1800	x2529
1574C	Slay the Dragon binary search, greedy, sortings, ternary search	1300	x17098
1573B	Swaps greedy, math, sortings	1400	x14563
1572A	Book binary search, brute force, data structures, dp, graphs, implementation, sortings	1800	x9002
1571E	Fix the String *special problem, bitmasks, dp, greedy	1700	x337
1571D	Sweepstake *special problem, brute force, constructive algorithms, implementation, math	1800	x332
1571C	Rhyme *special problem, implementation	1800	x376
1571B	Epic Novel *special problem, math	1300	x714
1569D	Inconvenient Pairs binary search, data structures, implementation, sortings, two pointers	1900	x4380
1569C	Jury Meeting combinatorics, math	1500	x12022
1567C	Carrying Conundrum bitmasks, combinatorics, dp, math	1600	x12182
1566D2	Seating Arrangements (hard version) data structures, greedy, implementation, sortings, two pointers	1600	x7854
1562D1	Two Hundred Twenty One (easy version) data structures, dp, math	1700	x6343
1562C	Rings constructive algorithms, math	1500	x13291
1561D1	Up the Strip (simplified version) brute force, data structures, dp, math, number theory	1700	x5613
1561C	Deep Down Below binary search, greedy, sortings	1300	x14621
1560F1	Nearest Beautiful Number (easy version) binary search, bitmasks, brute force, constructive algorithms, dfs and similar, greedy	1900	x6140
1560E	Polycarp and String Transformation binary search, implementation, sortings, strings	1800	x7964
1560D	Make a Power of Two greedy, math, strings	1300	x18191
1559D1	Mocha and Diana (Easy Version) brute force, constructive algorithms, dsu, graphs, greedy, trees	1400	x13822
1558B	Up the Strip brute force, dp, math, number theory, two pointers	1900	x4795
1558A	Charmed by the Game brute force, math	1300	x11090
1557C	Moamen and XOR bitmasks, combinatorics, dp, math, matrices	1700	x8607
1556D	Take a Guess bitmasks, constructive algorithms, interactive, math	1800	x6924
1556C	Compressed Bracket Sequence brute force, implementation	1800	x5788
1556B	Take Your Places! implementation	1300	x12694
1555D	Say No to Palindromes brute force, constructive algorithms, dp, strings	1600	x12377
1555C	Coin Rows brute force, constructive algorithms, dp, implementation	1300	x21725
1555B	Two Tables brute force	1300	x16062
1554D	Diane constructive algorithms, greedy, strings	1800	x9459