Problemset - Codeforces

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Before contest
Codeforces Round #792 (Div. 1)
2 days

Before contest
Codeforces Round #792 (Div. 2)
2 days

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Difficulty: —

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Problems

#	Name
1676H2	Maximum Crossings (Hard Version) data structures, divide and conquer, sortings	1500	x4664
1676F	Longest Strike data structures, greedy, implementation, sortings, two pointers	1300	x7781
1676E	Eating Queries binary search, greedy, sortings	1100	x12408
1676B	Equal Candies greedy, math, sortings	800	x23021
1674D	A-B-C Sort constructive algorithms, implementation, sortings	1200	x9419
1671E	Preorder combinatorics, divide and conquer, dp, dsu, hashing, sortings, trees	2100	x1701
1671B	Consecutive Points Segment brute force, math, sortings	1000	x12900
1670A	Prof. Slim greedy, implementation, sortings	800	x11699
1669B	Triple implementation, sortings	800	x22783
1668B	Social Distance greedy, math, sortings	900	x11795
1665C	Tree Infection binary search, greedy, sortings, trees	1600	x5338
1665B	Array Cloning Technique constructive algorithms, greedy, sortings	900	x14003
1662N	Drone Photo combinatorics, math, sortings		x235
1662I	Ice Cream Shop brute force, implementation, sortings		x847
1658E	Gojou and Matrix Game data structures, dp, games, hashing, implementation, math, number theory, sortings	2500	x674
1657D	For Gamers. By Gamers. binary search, brute force, greedy, math, sortings	2000	x3725
1656F	Parametric MST binary search, constructive algorithms, graphs, greedy, math, sortings	2600	x665
1656C	Make Equal With Mod constructive algorithms, math, number theory, sortings	1200	x12575
1656A	Good Pairs math, sortings	800	x16469
1654F	Minimal String Xoration bitmasks, data structures, divide and conquer, greedy, hashing, sortings, strings	2800	x597
1654C	Alice and the Cake data structures, greedy, implementation, sortings	1400	x9640
1654A	Maximum Cake Tastiness brute force, greedy, implementation, sortings	800	x15866
1650E	Rescheduling the Exam binary search, data structures, greedy, implementation, math, sortings	1900	x3037
1650C	Weight of the System of Nested Segments greedy, hashing, implementation, sortings	1200	x12576
1648A	Weird Sum combinatorics, data structures, geometry, math, matrices, sortings	1400	x8210
1646B	Quality vs Quantity brute force, constructive algorithms, greedy, sortings, two pointers	800	x16842
1641C	Anonymity Is Important binary search, brute force, data structures, dsu, greedy, sortings	2200	x1659
1641B	Repetitions Decoding constructive algorithms, implementation, sortings	2000	x3000
1641A	Great Sequence brute force, greedy, sortings	1200	x13058
1638B	Odd Swap Sort data structures, math, sortings	1100	x16057
1637H	Minimize Inversions Number data structures, greedy, math, sortings	3500	x142
1637A	Sorting Parts brute force, sortings	800	x19639
1635E	Cars 2-sat, constructive algorithms, dfs and similar, dsu, graphs, greedy, sortings	2200	x1516
1633E	Spanning Tree Queries binary search, data structures, dfs and similar, dsu, graphs, greedy, math, sortings, trees	2400	x1098
1630C	Paint the Middle dp, greedy, sortings, two pointers	2200	x2161
1629A	Download More RAM brute force, greedy, sortings	800	x23633
1628F	Spaceship Crisis Management binary search, data structures, geometry, sortings	3500	x57
1627B	Not Sitting games, greedy, sortings	1300	x13078
1626A	Equidistant Letters constructive algorithms, sortings	800	x23856
1625D	Binary Spiders bitmasks, data structures, implementation, math, sortings, trees	2300	x1517
1625B	Elementary Particles brute force, greedy, sortings	1100	x13397
1624D	Palindromes Coloring binary search, greedy, sortings, strings	1400	x11551
1623B	Game on Ranges brute force, dfs and similar, implementation, sortings	1100	x12055
1622C	Set or Decrease binary search, brute force, greedy, sortings	1600	x8506
1622B	Berland Music data structures, greedy, math, sortings	1000	x16343
1621E	New School binary search, data structures, dp, greedy, implementation, sortings	2300	x1452
1619G	Unusual Minesweeper binary search, dfs and similar, dsu, greedy, sortings	2000	x1526
1619E	MEX and Increments constructive algorithms, data structures, dp, greedy, implementation, math, sortings	1700	x6274
1619D	New Year's Problem binary search, greedy, sortings	1800	x5194
1618G	Trader Problem data structures, dsu, greedy, sortings	2200	x907
1618A	Polycarp and Sums of Subsequences math, sortings	800	x25121
1617C	Paprika and Permutation binary search, greedy, math, sortings	1300	x10668
1617A	Forbidden Subsequence constructive algorithms, greedy, sortings, strings	800	x14330
1615E	Purple Crayon data structures, dfs and similar, games, graphs, greedy, math, sortings, trees	2400	x1089
1614B	Divan and a New Project constructive algorithms, sortings	1000	x14357
1613B	Absent Remainder greedy, implementation, sortings	1000	x16245
1612G	Max Sum Array combinatorics, constructive algorithms, greedy, sortings	2500	x565
1612E	Messages brute force, dp, greedy, probabilities, sortings	2000	x1737
1608E	The Cells on the Paper binary search, implementation, sortings	2800	x323
1607H	Banquet Preparations 2 greedy, sortings, two pointers	2200	x930
1607D	Blue-Red Permutation greedy, math, sortings	1300	x12682
1607C	Minimum Extraction brute force, sortings	1000	x18525
1606D	Red-Blue Matrix brute force, constructive algorithms, implementation, sortings	2400	x1130
1605E	Array Equalizer binary search, greedy, implementation, math, number theory, sortings, two pointers	2400	x758
1605B	Reverse Sort greedy, sortings	1000	x14027
1601D	Difficult Mountain data structures, dp, greedy, sortings	2700	x762
1601C	Optimal Insertion data structures, divide and conquer, dp, greedy, sortings	2300	x1446
1592B	Hemose Shopping constructive algorithms, dsu, math, sortings	1200	x12266
1592A	Gamer Hemose binary search, greedy, math, sortings	800	x17174
1584C	Two Arrays greedy, math, sortings	900	x12325
1583H	Omkar and Tours data structures, divide and conquer, sortings, trees	3300	x175
1579B	Shifting Sort implementation, sortings	1100	x15298
1575L	Longest Array Deconstruction data structures, divide and conquer, dp, sortings	2100	x724
1575A	Another Sorting Problem data structures, sortings, strings	1100	x2832
1574C	Slay the Dragon binary search, greedy, sortings, ternary search	1300	x12665
1573B	Swaps greedy, math, sortings	1400	x10862
1572A	Book binary search, brute force, data structures, dp, graphs, implementation, sortings	1800	x6210
1569D	Inconvenient Pairs binary search, data structures, implementation, sortings, two pointers	1900	x3563
1566F	Points Movement data structures, dp, greedy, implementation, sortings	2600	x742
1566D2	Seating Arrangements (hard version) data structures, greedy, implementation, sortings, two pointers	1600	x6613
1566D1	Seating Arrangements (easy version) data structures, greedy, sortings	1100	x12036
1561C	Deep Down Below binary search, greedy, sortings	1300	x10741
1561A	Simply Strange Sort brute force, implementation, sortings	800	x15365
1560E	Polycarp and String Transformation binary search, implementation, sortings, strings	1800	x6190
1558F	Strange Sort data structures, sortings	3300	x137
1557B	Moamen and k-subarrays greedy, sortings	1100	x18650
1557A	Ezzat and Two Subsequences brute force, math, sortings	800	x23514
1555E	Boring Segments data structures, sortings, trees, two pointers	2100	x2995
1552G	A Serious Referee bitmasks, brute force, dfs and similar, sortings	3000	x344
1552F	Telepanting binary search, data structures, dp, sortings	2200	x2102
1552E	Colors and Intervals constructive algorithms, data structures, greedy, sortings	2300	x1513
1552C	Maximize the Intersections combinatorics, constructive algorithms, geometry, greedy, sortings	1800	x5043
1552B	Running for Gold combinatorics, graphs, greedy, sortings	1500	x11991
1552A	Subsequence Permutation sortings, strings	800	x20548
1551C	Interesting Story greedy, sortings, strings	1500	x10081
1550D	Excellent Arrays binary search, combinatorics, constructive algorithms, implementation, math, sortings, two pointers	2300	x1487
1547E	Air Conditioners data structures, dp, implementation, shortest paths, sortings, two pointers	1500	x10423
1545A	AquaMoon and Strange Sort sortings	1500	x10984
1540A	Great Graphs constructive algorithms, graphs, greedy, shortest paths, sortings	1400	x11488
1539F	Strange Array data structures, greedy, sortings	2600	x680

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