Problemset - Codeforces

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Codeforces Round 945 (Div. 2)
39:54:09
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Problems

#	Name
1725F	Field Photography bitmasks, data structures, sortings	2100	x938
1725B	Basketball Together binary search, greedy, sortings	1000	x11757
1722D	Line greedy, sortings	1100	x22315
1721D	Maximum AND bitmasks, dfs and similar, divide and conquer, greedy, sortings	1800	x6322
1720B	Interesting Sum brute force, data structures, greedy, math, sortings	800	x20769
1713B	Optimal Reduction constructive algorithms, sortings	1000	x20742
1712C	Sort Zero greedy, sortings	1100	x19248
1707C	DFS Trees dfs and similar, dsu, graphs, greedy, sortings, trees	2400	x1396
1707B	Difference Array brute force, data structures, implementation, sortings	1900	x5547
1705D	Mark and Lightbulbs combinatorics, constructive algorithms, greedy, math, sortings	1800	x6109
1705A	Mark the Photographer greedy, sortings	800	x24826
1704C	Virus greedy, implementation, sortings	1200	x14449
1703F	Yet Another Problem About Pairs Satisfying an Inequality binary search, data structures, dp, greedy, sortings	1300	x18268
1701D	Permutation Restoration binary search, data structures, greedy, math, sortings, two pointers	1900	x5490
1698E	PermutationForces II brute force, combinatorics, greedy, sortings, trees, two pointers	2300	x1575
1697B	Promo greedy, sortings	900	x25554
1692G	2^Sort data structures, dp, sortings, two pointers	1400	x16003
1692B	All Distinct greedy, sortings	800	x32865
1691E	Number of Groups data structures, dfs and similar, dsu, graphs, greedy, sortings	2300	x1751
1690G	Count the Trains binary search, data structures, greedy, sortings	2000	x3252
1689A	Lex String brute force, greedy, implementation, sortings, two pointers	800	x16386
1688B	Patchouli's Magical Talisman bitmasks, constructive algorithms, greedy, sortings	800	x17863
1687C	Sanae and Giant Robot binary search, brute force, data structures, dsu, greedy, sortings	2500	x1338
1687B	Railway System constructive algorithms, graphs, greedy, interactive, sortings	1700	x3487
1685B	Linguistics greedy, implementation, sortings, strings	2000	x3169
1685A	Circular Local MiniMax constructive algorithms, greedy, sortings	1100	x16506
1684D	Traps constructive algorithms, greedy, sortings	1700	x9322
1684C	Column Swapping brute force, constructive algorithms, greedy, implementation, sortings	1400	x12032
1682F	MCMF? data structures, flows, graphs, greedy, sortings, two pointers	2700	x285
1682E	Unordered Swaps constructive algorithms, dfs and similar, graphs, greedy, math, sortings, trees	2700	x561
1682B	AND Sorting bitmasks, constructive algorithms, sortings	1100	x17257
1681C	Double Sort implementation, sortings	1200	x16977
1676H2	Maximum Crossings (Hard Version) data structures, divide and conquer, sortings	1500	x10062
1676F	Longest Strike data structures, greedy, implementation, sortings, two pointers	1300	x15876
1676E	Eating Queries binary search, greedy, sortings	1100	x24719
1676B	Equal Candies greedy, math, sortings	800	x45308
1674D	A-B-C Sort constructive algorithms, implementation, sortings	1200	x15788
1671E	Preorder combinatorics, divide and conquer, dp, dsu, hashing, sortings, trees	2100	x2647
1671B	Consecutive Points Segment brute force, math, sortings	1000	x18127
1670A	Prof. Slim greedy, implementation, sortings	800	x15239
1669B	Triple implementation, sortings	800	x40026
1668B	Social Distance greedy, math, sortings	900	x16336
1665C	Tree Infection binary search, greedy, sortings, trees	1600	x8049
1665B	Array Cloning Technique constructive algorithms, greedy, sortings	900	x18776
1662N	Drone Photo combinatorics, math, sortings		x694
1662I	Ice Cream Shop brute force, implementation, sortings		x1973
1658E	Gojou and Matrix Game data structures, dp, games, hashing, implementation, math, number theory, sortings	2500	x1022
1657D	For Gamers. By Gamers. binary search, brute force, greedy, math, sortings	2000	x4713
1656F	Parametric MST binary search, constructive algorithms, graphs, greedy, math, sortings	2600	x988
1656C	Make Equal With Mod constructive algorithms, math, number theory, sortings	1200	x18519
1656A	Good Pairs math, sortings	800	x19255
1654F	Minimal String Xoration bitmasks, data structures, divide and conquer, greedy, hashing, sortings, strings	2800	x1054
1654C	Alice and the Cake data structures, greedy, implementation, sortings	1400	x13164
1654A	Maximum Cake Tastiness brute force, greedy, implementation, sortings	800	x18418
1650E	Rescheduling the Exam binary search, data structures, greedy, implementation, math, sortings	1900	x4021
1650C	Weight of the System of Nested Segments greedy, hashing, implementation, sortings	1200	x16388
1648A	Weird Sum combinatorics, data structures, geometry, math, matrices, sortings	1400	x11792
1646B	Quality vs Quantity brute force, constructive algorithms, greedy, sortings, two pointers	800	x20874
1641C	Anonymity Is Important binary search, brute force, data structures, dsu, greedy, sortings	2200	x2332
1641B	Repetitions Decoding constructive algorithms, implementation, sortings	2000	x3731
1641A	Great Sequence brute force, greedy, sortings	1200	x17539
1638B	Odd Swap Sort data structures, math, sortings	1100	x20421
1637H	Minimize Inversions Number data structures, greedy, math, sortings	3500	x300
1637A	Sorting Parts brute force, sortings	800	x22086
1635E	Cars 2-sat, constructive algorithms, dfs and similar, dsu, graphs, greedy, sortings	2200	x2168
1633E	Spanning Tree Queries binary search, data structures, dfs and similar, dsu, graphs, greedy, math, sortings, trees	2400	x1459
1630C	Paint the Middle dp, greedy, sortings, two pointers	2200	x2835
1629A	Download More RAM brute force, greedy, sortings	800	x28558
1628F	Spaceship Crisis Management binary search, data structures, geometry, sortings	3500	x84
1627B	Not Sitting games, greedy, sortings	1300	x16289
1626A	Equidistant Letters constructive algorithms, sortings	800	x28343
1625D	Binary Spiders bitmasks, data structures, implementation, math, sortings, trees	2300	x1969
1625B	Elementary Particles brute force, greedy, sortings	1100	x15868
1624D	Palindromes Coloring binary search, greedy, sortings, strings	1400	x16284
1623B	Game on Ranges brute force, dfs and similar, implementation, sortings	1100	x13910
1622C	Set or Decrease binary search, brute force, greedy, sortings	1600	x12399
1622B	Berland Music data structures, greedy, math, sortings	1000	x20555
1621E	New School binary search, data structures, dp, greedy, implementation, sortings	2300	x1714
1619G	Unusual Minesweeper binary search, dfs and similar, dsu, greedy, sortings	2000	x2272
1619E	MEX and Increments constructive algorithms, data structures, dp, greedy, implementation, math, sortings	1700	x8703
1619D	New Year's Problem binary search, greedy, sortings	1800	x7278
1618G	Trader Problem data structures, dsu, greedy, sortings	2200	x1482
1618A	Polycarp and Sums of Subsequences math, sortings	800	x31600
1617C	Paprika and Permutation binary search, greedy, math, sortings	1300	x14594
1617A	Forbidden Subsequence constructive algorithms, greedy, sortings, strings	800	x16095
1615E	Purple Crayon data structures, dfs and similar, games, graphs, greedy, math, sortings, trees	2400	x1406
1614B	Divan and a New Project constructive algorithms, sortings	1000	x17915
1613B	Absent Remainder greedy, implementation, sortings	1000	x21203
1612G	Max Sum Array combinatorics, constructive algorithms, greedy, sortings	2500	x816
1612E	Messages brute force, dp, greedy, probabilities, sortings	2000	x2391
1608E	The Cells on the Paper binary search, implementation, sortings	2800	x423
1607H	Banquet Preparations 2 greedy, sortings, two pointers	2200	x1197
1607D	Blue-Red Permutation greedy, math, sortings	1300	x16418
1607C	Minimum Extraction brute force, sortings	1000	x24353
1606D	Red-Blue Matrix brute force, constructive algorithms, implementation, sortings	2400	x1402
1605E	Array Equalizer binary search, greedy, implementation, math, number theory, sortings, two pointers	2400	x997
1605B	Reverse Sort greedy, sortings	1000	x17658
1601D	Difficult Mountain data structures, dp, greedy, sortings	2700	x1382
1601C	Optimal Insertion data structures, divide and conquer, dp, greedy, sortings	2300	x1917
1592B	Hemose Shopping constructive algorithms, dsu, math, sortings	1200	x15593