Problemset - Codeforces

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Codeforces Round 977 (Div. 2)
2 days
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Problems

#	Name
1742E	Scuza binary search, greedy, math	1200	x24620
1742D	Coprime brute force, greedy, number theory	1100	x23618
1741D	Masha and a Beautiful Tree dfs and similar, divide and conquer, graphs, sortings, trees	1300	x15207
1741C	Minimize the Thickness brute force, greedy, math, two pointers	1100	x17741
1739B	Array Recovery constructive algorithms, greedy, math	1100	x22319
1738B	Prefix Sum Addicts constructive algorithms, greedy, math, sortings	1200	x15585
1737B	Ela's Fitness and the Luxury Number binary search, implementation, math	1300	x9388
1736C1	Good Subarrays (Easy Version) binary search, data structures, schedules, two pointers	1300	x15016
1736B	Playing with GCD math, number theory	1200	x17939
1734C	Removing Smallest Multiples greedy, math	1200	x18566
1733C	Parity Shuffle Sorting constructive algorithms, sortings	1300	x15607
1731B	Kill Demodogs greedy, math	1100	x18247
1730C	Minimum Notation data structures, greedy, math, sortings	1200	x16503
1729D	Friends and the Restaurant greedy, sortings, two pointers	1200	x20664
1729C	Jumping on Tiles constructive algorithms, strings	1100	x19948
1726C	Jatayu's Balanced Bracket Sequence data structures, dsu, graphs, greedy	1300	x12339
1726B	Mainak and Interesting Sequence bitmasks, constructive algorithms, math	1100	x15150
1722D	Line greedy, sortings	1100	x23213
1720C	Corners greedy, implementation	1200	x16793
1717C	Madoka and Formal Statement greedy	1300	x14651
1717B	Madoka and Underground Competitions constructive algorithms, implementation	1100	x14775
1713C	Build Permutation constructive algorithms, dp, math	1200	x17366
1712C	Sort Zero greedy, sortings	1100	x19806
1711B	Party brute force, graphs	1300	x13403
1708B	Difference of GCDs constructive algorithms, math	1100	x20673
1706B	Making Towers dp, greedy, math	1100	x16550
1704C	Virus greedy, implementation, sortings	1200	x15778
1703F	Yet Another Problem About Pairs Satisfying an Inequality binary search, data structures, dp, greedy, sortings	1300	x19994
1703E	Mirror Grid implementation	1200	x18327
1703D	Double Strings brute force, data structures, strings	1100	x25609
1702C	Train and Queries data structures, greedy	1100	x22231
1700B	Palindromic Numbers constructive algorithms, implementation, math	1100	x18713
1698C	3SUM Closure brute force, data structures	1300	x18493
1694B	Paranoid String constructive algorithms, greedy	1200	x19121
1693A	Directional Increase greedy	1300	x16138
1692F	3SUM brute force, math	1300	x22782
1692E	Binary Deque binary search, implementation, two pointers	1200	x21933
1692D	The Clock brute force, implementation	1100	x19406
1685A	Circular Local MiniMax constructive algorithms, greedy, sortings	1100	x17097
1682B	AND Sorting bitmasks, constructive algorithms, sortings	1100	x18541
1681C	Double Sort implementation, sortings	1200	x17360
1679B	Stone Age Problem data structures, implementation	1200	x18454
1676G	White-Black Balanced Subtrees dfs and similar, dp, graphs, trees	1300	x15650
1676F	Longest Strike data structures, greedy, implementation, sortings, two pointers	1300	x16701
1676E	Eating Queries binary search, greedy, sortings	1100	x26298
1675D	Vertical Paths graphs, implementation, trees	1300	x13069
1675C	Detective Task implementation	1100	x18212
1674D	A-B-C Sort constructive algorithms, implementation, sortings	1200	x16334
1673B	A Perfectly Balanced String? brute force, greedy, strings	1100	x15186
1672C	Unequal Array constructive algorithms, greedy, implementation	1100	x13220
1671C	Dolce Vita binary search, brute force, greedy, math	1200	x17172
1670B	Dorms War brute force, implementation, strings	1100	x12707
1669H	Maximal AND bitmasks, greedy, math	1300	x18569
1669G	Fall Down dfs and similar, implementation	1200	x18260
1669F	Eating Candies binary search, data structures, greedy, two pointers	1100	x25788
1669E	2-Letter Strings data structures, math, strings	1200	x17870
1669D	Colorful Stamp implementation	1100	x22195
1667A	Make it Increasing brute force, greedy, math	1300	x14693
1661B	Getting Zero bitmasks, brute force, dfs and similar, dp, graphs, greedy, shortest paths	1300	x17720
1660C	Get an Even String dp, greedy, strings	1300	x19546
1659B	Bit Flipping bitmasks, constructive algorithms, greedy, strings	1300	x10929
1657C	Bracket Sequence Deletion greedy, implementation	1200	x16809
1656C	Make Equal With Mod constructive algorithms, math, number theory, sortings	1200	x19146
1656B	Subtract Operation data structures, greedy, math, two pointers	1100	x18854
1650D	Twist the Permutation brute force, constructive algorithms, implementation, math	1300	x13016
1650C	Weight of the System of Nested Segments greedy, hashing, implementation, sortings	1200	x16735
1649B	Game of Ball Passing greedy, implementation	1300	x13030
1647C	Madoka and Childish Pranks constructive algorithms, greedy	1300	x12587
1647B	Madoka and the Elegant Gift brute force, constructive algorithms, graphs, implementation	1200	x15389
1641A	Great Sequence brute force, greedy, sortings	1200	x17894
1638C	Inversion Graph data structures, dsu, graphs, math	1300	x14677
1638B	Odd Swap Sort data structures, math, sortings	1100	x20842
1637C	Andrew and Stones greedy, implementation	1200	x17693
1637B	MEX and Array brute force, dp, greedy, math	1100	x14803
1635C	Differential Sorting constructive algorithms, greedy	1200	x17548
1633C	Kill the Monster brute force, math	1100	x20053
1631B	Fun with Even Subarrays dp, greedy	1100	x20345
1627B	Not Sitting games, greedy, sortings	1300	x16627
1626B	Minor Reduction greedy, strings	1100	x22809
1625B	Elementary Particles brute force, greedy, sortings	1100	x16082
1624C	Division by Two and Permutation constructive algorithms, flows, graph matchings, greedy, math	1100	x24825
1623B	Game on Ranges brute force, dfs and similar, implementation, sortings	1100	x14086
1619C	Wrong Addition implementation	1200	x20952
1618D	Array and Operations dp, greedy, math	1300	x18909
1618C	Paint the Array math	1100	x23010
1617C	Paprika and Permutation binary search, greedy, math, sortings	1300	x14979
1616B	Mirror in the String greedy, strings	1100	x19652
1615B	And It's Non-Zero bitmasks, greedy, math	1300	x15946
1613C	Poisoned Dagger binary search	1200	x24446
1612C	Chat Ban binary search, math	1300	x17398
1610B	Kalindrome Array greedy, two pointers	1100	x15862
1609B	William the Vigilant implementation, strings	1100	x11687
1608B	Build the Permutation constructive algorithms, greedy	1200	x11687
1607D	Blue-Red Permutation greedy, math, sortings	1300	x16844
1606B	Update Files greedy, implementation, math	1100	x18661
1604B	XOR Specia-LIS-t	1100	x15647
1603A	Di-visible Confusion constructive algorithms, math, number theory	1300	x16633
1602B	Divine Array constructive algorithms, implementation	1100	x14089
1601A	Array Elimination bitmasks, greedy, math, number theory	1300	x14589
1598C	Delete Two Elements data structures, dp, implementation, math, two pointers	1200	x20811