Problemset - Codeforces

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Codeforces Round #849 (Div. 4)
43:27:05
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Problems

#	Name
1792D	Fixed Prefix Permutations binary search, bitmasks, data structures, hashing, math, sortings		x3345
1792C	Min Max Sort binary search, brute force, greedy, math, two pointers		x6890
1792B	Stand-up Comedian greedy, math		x11513
1790F	Timofey and Black-White Tree brute force, dfs and similar, divide and conquer, graphs, greedy, math, shortest paths, trees		x1637
1790C	Premutation brute force, implementation, math		x15037
1790B	Taisia and Dice greedy, greedy, math		x18976
1790A	Polycarp and the Day of Pi implementation, math, strings		x24090
1787F	Inverse Transformation constructive algorithms, implementation, math		x408
1787E	The Harmonization of XOR bitmasks, constructive algorithms, greedy, math		x1274
1787C	Remove the Bracket dp, greedy, math		x3930
1787B	Number Factorization greedy, math, number theory		x9210
1787A	Exponential Equation constructive algorithms, math		x13908
1783E	Game of the Year brute force, data structures, math, number theory	2300	x1449
1783B	Matrix of Differences constructive algorithms, math	1100	x13807
1783A	Make it Beautiful constructive algorithms, math, sortings	800	x21161
1781F	Bracket Insertion combinatorics, dp, math, trees	2700	x479
1781D	Many Perfect Squares brute force, math, number theory	1800	x3621
1781A	Parallel Projection geometry, math	800	x12772
1780G	Delicious Dessert binary search, dsu, hashing, math, number theory, string suffix structures		x320
1780E	Josuke and Complete Graph binary search, brute force, data structures, math, number theory		x768
1780B	GCD Partition brute force, greedy, math, number theory		x11742
1779B	MKnez's ConstructiveForces Task constructive algorithms, math	900	x18415
1778E	The Tree Has Fallen! dfs and similar, math, trees		x169
1778D	Flexible String Revisit dp, math, probabilities		x761
1778B	The Forbidden Permutation greedy, math		x6276
1777D	Score of a Tree bitmasks, combinatorics, dfs and similar, dp, math, probabilities, trees		x1928
1777C	Quiz Master binary search, math, number theory, sortings, two pointers		x4805
1777B	Emordnilap combinatorics, greedy, math		x12718
1777A	Everybody Likes Good Arrays! greedy, math		x16024
1775F	Laboratory on Pluto constructive algorithms, dp, greedy, math	2500	x527
1775D	Friendly Spiders dfs and similar, graphs, math, number theory, shortest paths	1800	x3612
1775C	Interesting Sequence bitmasks, math	1600	x6608
1774B	Coloring constructive algorithms, greedy, math	1500	x8243
1774A	Add Plus Minus Sign constructive algorithms, math	800	x19143
1773J	Jumbled Trees constructive algorithms, math	2900	x57
1773G	Game of Questions bitmasks, combinatorics, dp, fft, math, probabilities	2800	x181
1773A	Amazing Trick constructive algorithms, graph matchings, math, probabilities	1900	x964
1772G	Gaining Rating binary search, greedy, implementation, math, sortings, two pointers	2200	x882
1772D	Absolute Sorting constructive algorithms, math	1400	x9203
1772C	Different Differences constructive algorithms, greedy, math	1000	x16940
1771C	Hossam and Trainees greedy, math, number theory	1600	x6025
1771A	Hossam and Combinatorics combinatorics, math, sortings	900	x17158
1770G	Koxia and Bracket divide and conquer, fft, math	3400	x96
1770F	Koxia and Sequence bitmasks, combinatorics, dp, math, number theory	3100	x323
1770E	Koxia and Tree combinatorics, dfs and similar, dp, dsu, math, probabilities, trees	2400	x1027
1770C	Koxia and Number Theory brute force, chinese remainder theorem, math, number theory	1700	x6752
1769B2	Копирование файлов II *special problem, binary search, brute force, math	1400	x726
1769B1	Копирование файлов I *special problem, brute force, implementation, math	1000	x1102
1769A	Узкая дорога *special problem, math	800	x1532
1768E	Partial Sorting combinatorics, math, number theory	2300	x1327
1768B	Quick Sort greedy, math	900	x17526
1768A	Greatest Convex greedy, math, number theory	800	x22861
1767E	Algebra Flash bitmasks, brute force, dp, graphs, math, meet-in-the-middle, trees	2500	x532
1767D	Playoff combinatorics, constructive algorithms, dp, greedy, math	1500	x7062
1766D	Lucky Chains math, number theory	1600	x5660
1765M	Minimum LCM math, number theory	1000	x7280
1765K	Torus Path greedy, math	1500	x3390
1765J	Hero to Zero graph matchings, math	2900	x91
1765E	Exchange brute force, math	1000	x6533
1764D	Doremy's Pegging Game combinatorics, dp, math	2000	x2080
1764B	Doremy's Perfect Math Class math, number theory	900	x12206
1763E	Node Pairs dp, graphs, math, number theory	2200	x1223
1763D	Valid Bitonic Permutations combinatorics, dp, implementation, math, number theory	2200	x1510
1763B	Incinerate binary search, brute force, data structures, implementation, math, sortings	1200	x9968
1763A	Absolute Maximization bitmasks, constructive algorithms, greedy, math	800	x13143
1762E	Tree Sum combinatorics, math, trees	2600	x392
1762C	Binary Strings are Fun combinatorics, math	1400	x6752
1762A	Divide and Conquer greedy, math, number theory	800	x15999
1761F2	Anti-median (Hard Version) combinatorics, dp, math	3500	x38
1761F1	Anti-median (Easy Version) dp, math	3100	x123
1761D	Carry Bit combinatorics, math	2100	x1829
1760E	Binary Inversions data structures, greedy, math	1100	x14040
1759G	Restore the Permutation binary search, constructive algorithms, data structures, greedy, math	1900	x2988
1759F	All Possible Digits binary search, data structures, greedy, math, number theory	1800	x2518
1759C	Thermostat greedy, math, shortest paths	1100	x13206
1759B	Lost Permutation math	800	x17859
1758D	Range = √Sum binary search, brute force, constructive algorithms, math, two pointers	1800	x4891
1754B	Kevin and Permutation constructive algorithms, greedy, math	800	x16652
1753C	Wish I Knew How to Sort dp, math, probabilities	2000	x2897
1753B	Factorial Divisibility math, number theory	1600	x9103
1750G	Doping combinatorics, dp, math	3300	x102
1750F	Majority combinatorics, dp, math, strings	2700	x473
1750D	Count GCD combinatorics, math, number theory	1800	x4217
1750A	Indirect Sort constructive algorithms, implementation, math	800	x15110
1749D	Counting Arrays combinatorics, dp, math, number theory	1900	x4195
1748E	Yet Another Array Counting Problem binary search, data structures, divide and conquer, dp, flows, math, trees	2300	x1239
1748D	ConstructOR bitmasks, chinese remainder theorem, combinatorics, constructive algorithms, math, number theory	2100	x2172
1748A	The Ultimate Square math	800	x20534
1747E	List Generation combinatorics, dp, math	2900	x370
1746C	Permutation Operations constructive algorithms, greedy, implementation, math	1300	x9891
1744F	MEX vs MED math, two pointers	2000	x1971
1744E2	Divisible Numbers (hard version) brute force, math, number theory	1900	x3749
1744E1	Divisible Numbers (easy version) brute force, math, number theory	1500	x7345
1744D	Divisibility by 2^n greedy, math, sortings	1200	x14426
1744B	Even-Odd Increments implementation, math	800	x19539
1743G	Antifibonacci Cut bitmasks, combinatorics, constructive algorithms, data structures, dp, hashing, math	3000	x175
1743A	Password brute force, combinatorics, implementation, math	800	x22444
1742G	Orray bitmasks, brute force, greedy, math, sortings	1500	x6687
1742E	Scuza binary search, greedy, math	1200	x14502
1741F	Multi-Colored Segments binary search, data structures, math, sortings	2000	x1676

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