Problemset - Codeforces

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Codeforces Round 987 (Div. 2)
10:33:49
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Problems

#	Name
1669E	2-Letter Strings data structures, math, strings	1200	x18151
1669D	Colorful Stamp implementation	1100	x22464
1669C	Odd/Even Increments greedy, greedy, implementation, math	800	x35150
1669B	Triple implementation, sortings	800	x43945
1669A	Division? implementation	800	x64739
1668B	Social Distance greedy, math, sortings	900	x16767
1668A	Direction Change implementation, math	800	x16354
1666D	Deletive Editing greedy	900	x8848
1665B	Array Cloning Technique constructive algorithms, greedy, sortings	900	x20795
1665A	GCD vs LCM constructive algorithms, math	800	x23726
1661A	Array Balancing greedy, math	800	x18415
1660B	Vlad and Candies math	800	x28185
1660A	Vasya and Coins greedy, math	800	x36228
1659A	Red Versus Blue constructive algorithms, greedy, implementation, math	1000	x19176
1658B	Marin and Anti-coprime Permutation combinatorics, math, number theory	800	x18655
1658A	Marin and Photoshoot constructive algorithms, implementation, math	800	x20373
1657C	Bracket Sequence Deletion greedy, implementation	1200	x16878
1657B	XY Sequence greedy	800	x22870
1657A	Integer Moves brute force, math	800	x24025
1656C	Make Equal With Mod constructive algorithms, math, number theory, sortings	1200	x19304
1656B	Subtract Operation data structures, greedy, math, two pointers	1100	x19171
1656A	Good Pairs math, sortings	800	x19696
1654B	Prefix Removals strings	800	x15653
1654A	Maximum Cake Tastiness brute force, greedy, implementation, sortings	800	x18693
1651B	Prove Him Wrong constructive algorithms, greedy	800	x19688
1651A	Playoff implementation	800	x25744
1650C	Weight of the System of Nested Segments greedy, hashing, implementation, sortings	1200	x16825
1650B	DIV + MOD math	900	x27815
1650A	Deletions of Two Adjacent Letters implementation, strings	800	x34865
1649A	Game implementation	800	x15583
1647B	Madoka and the Elegant Gift brute force, constructive algorithms, graphs, implementation	1200	x15445
1647A	Madoka and Math Dad implementation, math	800	x22823
1646B	Quality vs Quantity brute force, constructive algorithms, greedy, sortings, two pointers	800	x21232
1646A	Square Counting math	800	x24348
1644B	Anti-Fibonacci Permutation brute force, constructive algorithms, implementation	800	x20713
1644A	Doors and Keys implementation	800	x27440
1642B	Power Walking greedy	900	x17024
1642A	Hard Way geometry	800	x16233
1641A	Great Sequence brute force, greedy, sortings	1200	x17965
1638B	Odd Swap Sort data structures, math, sortings	1100	x20965
1638A	Reverse constructive algorithms, greedy, math	800	x21507
1637C	Andrew and Stones greedy, implementation	1200	x17820
1637B	MEX and Array brute force, dp, greedy, math	1100	x14860
1637A	Sorting Parts brute force, sortings	800	x22401
1635C	Differential Sorting constructive algorithms, greedy	1200	x17832
1635B	Avoid Local Maximums greedy	800	x17953
1635A	Min Or Sum bitmasks, greedy	800	x23045
1634C	OKEA constructive algorithms	1000	x18254
1634A	Reverse and Concatenate greedy, strings	800	x23948
1633C	Kill the Monster brute force, math	1100	x20133
1633B	Minority greedy	800	x27888
1633A	Div. 7 brute force	800	x33441
1632B	Roof Construction bitmasks, constructive algorithms	1000	x22657
1632A	ABC implementation	800	x29575
1631B	Fun with Even Subarrays dp, greedy	1100	x20560
1631A	Min Max Swap greedy	800	x29552
1629B	GCD Arrays greedy, math, number theory	800	x23548
1629A	Download More RAM brute force, greedy, sortings	800	x29326
1627A	Not Shading constructive algorithms, implementation	800	x24059
1626B	Minor Reduction greedy, strings	1100	x22887
1626A	Equidistant Letters constructive algorithms, sortings	800	x29039
1625B	Elementary Particles brute force, greedy, sortings	1100	x16126
1625A	Ancient Civilization bitmasks, greedy, math	800	x17288
1624C	Division by Two and Permutation constructive algorithms, flows, graph matchings, greedy, math	1100	x24981
1624B	Make AP implementation, math	900	x37379
1624A	Plus One on the Subset math	800	x52516
1623B	Game on Ranges brute force, dfs and similar, implementation, sortings	1100	x14122
1623A	Robot Cleaner brute force, implementation, math	800	x20083
1622B	Berland Music data structures, greedy, math, sortings	1000	x21149
1622A	Construct a Rectangle geometry, math	800	x30221
1621A	Stable Arrangement of Rooks constructive algorithms	800	x23874
1620B	Triangles on a Rectangle geometry, greedy, math	1000	x21537
1620A	Equal or Not Equal constructive algorithms, dsu, implementation	800	x21645
1619C	Wrong Addition implementation	1200	x21107
1619B	Squares and Cubes implementation, math	800	x31000
1619A	Square String? implementation, strings	800	x52499
1618C	Paint the Array math	1100	x23404
1618B	Missing Bigram implementation	800	x22752
1618A	Polycarp and Sums of Subsequences math, sortings	800	x32469
1617B	GCD Problem brute force, constructive algorithms, math, number theory	900	x23558
1617A	Forbidden Subsequence constructive algorithms, greedy, sortings, strings	800	x16305
1616B	Mirror in the String greedy, strings	1100	x19732
1616A	Integer Diversity implementation	800	x22832
1615A	Closing The Gap greedy, math	800	x20809
1614B	Divan and a New Project constructive algorithms, sortings	1000	x19602
1614A	Divan and a Store brute force, constructive algorithms, greedy	800	x23507
1613C	Poisoned Dagger binary search	1200	x24817
1613B	Absent Remainder greedy, implementation, sortings	1000	x21789
1613A	Long Comparison implementation, math	900	x24667
1612B	Special Permutation constructive algorithms, greedy	900	x17293
1612A	Distance brute force, constructive algorithms	800	x17701
1611C	Polycarp Recovers the Permutation constructive algorithms	1000	x18459
1611B	Team Composition: Programmers and Mathematicians binary search, constructive algorithms, math	800	x29789
1611A	Make Even constructive algorithms, math	800	x31577
1610B	Kalindrome Array greedy, two pointers	1100	x16156
1610A	Anti Light's Cell Guessing math	900	x16143
1609B	William the Vigilant implementation, strings	1100	x11724
1609A	Divide and Multiply greedy, implementation, math, number theory	900	x17182
1608B	Build the Permutation constructive algorithms, greedy	1200	x11777
1608A	Find Array constructive algorithms, math	800	x19126