Problemset - Codeforces

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Codeforces Round #851 (Div. 2)
37:35:06
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Problems

#	Name
1791C	Prepend and Append implementation, two pointers	800	x24136
1791B	Following Directions geometry, implementation	800	x26005
1791A	Codeforces Checking implementation, strings	800	x28920
1790C	Premutation brute force, implementation, math	1000	x15780
1790A	Polycarp and the Day of Pi implementation, math, strings	800	x25231
1787F	Inverse Transformation constructive algorithms, implementation, math	2500	x458
1787D	Game on Axis combinatorics, dfs and similar, dsu, graphs, implementation	1900	x2259
1786A2	Alternating Deck (hard version) implementation		x8591
1786A1	Non-alternating Deck (easy version) implementation		x10153
1784B	Letter Exchange constructive algorithms, greedy, implementation		x2127
1783G	Weighed Tree Radius data structures, divide and conquer, implementation, trees	2800	x269
1783D	Different Arrays brute force, dp, implementation	2000	x2959
1781E	Rectangle Shrinking binary search, brute force, data structures, greedy, implementation, two pointers	2300	x1081
1781C	Equal Frequencies brute force, constructive algorithms, greedy, implementation, sortings, strings	1600	x4994
1778A	Flip Flop Sum greedy, implementation		x18269
1775E	The Human Equation greedy, implementation	2100	x2196
1775A1	Gardener and the Capybaras (easy version) brute force, constructive algorithms, implementation	800	x15914
1774F2	Magician and Pigs (Hard Version) binary search, brute force, data structures, implementation	2700	x444
1774F1	Magician and Pigs (Easy Version) brute force, data structures, implementation	2400	x813
1774D	Same Count One brute force, constructive algorithms, greedy, implementation, two pointers	1600	x5465
1773I	Interactive Factorial Guessing brute force, games, implementation, interactive	2500	x324
1773B	BinCoin binary search, divide and conquer, hashing, implementation, probabilities, trees	2200	x519
1772G	Gaining Rating binary search, greedy, implementation, math, sortings, two pointers	2200	x903
1772F	Copy of a Copy of a Copy constructive algorithms, dfs and similar, graphs, implementation, sortings	2000	x1470
1772B	Matrix Rotation brute force, implementation	800	x22321
1772A	A+B? implementation	800	x28445
1771E	Hossam and a Letter brute force, dp, implementation, two pointers	2500	x511
1770D	Koxia and Game constructive algorithms, data structures, dfs and similar, dsu, flows, games, graph matchings, graphs, implementation	2000	x2921
1769B1	Копирование файлов I *special problem, brute force, implementation, math	1000	x1104
1768C	Elemental Decompress constructive algorithms, greedy, implementation, sortings	1300	x10294
1767A	Cut the Triangle implementation	800	x17737
1766C	Hamiltonian Wall dp, implementation	1300	x9955
1766B	Notepad# implementation	1000	x15614
1766A	Extremely Round brute force, implementation	800	x18822
1765L	Project Manager brute force, data structures, implementation	2400	x415
1765I	Infinite Chess implementation, shortest paths	2800	x115
1765H	Hospital Queue binary search, graphs, greedy, implementation	2200	x799
1763D	Valid Bitonic Permutations combinatorics, dp, implementation, math, number theory	2200	x1526
1763B	Incinerate binary search, brute force, data structures, implementation, math, sortings	1200	x10125
1762B	Make Array Good constructive algorithms, implementation, number theory, sortings	1100	x12941
1761B	Elimination of a Ring constructive algorithms, greedy, implementation	1000	x10719
1760D	Challenging Valleys implementation, two pointers	1000	x16800
1760C	Advantage data structures, implementation, sortings	800	x25877
1760B	Atilla's Favorite Problem greedy, implementation, strings	800	x29984
1760A	Medium Number implementation, sortings	800	x33857
1759A	Yes-Yes? implementation, strings	800	x22428
1750C	Complementary XOR constructive algorithms, implementation	1400	x7547
1750B	Maximum Substring brute force, greedy, implementation	800	x14511
1750A	Indirect Sort constructive algorithms, implementation, math	800	x15150
1749C	Number Game binary search, data structures, games, greedy, implementation	1400	x10411
1749A	Cowardly Rooks greedy, implementation	800	x19950
1748C	Zero-Sum Prefixes brute force, data structures, dp, greedy, implementation	1600	x7703
1748B	Diverse Substrings brute force, implementation, strings	1400	x11190
1746G	Olympiad Training binary search, data structures, dp, flows, geometry, implementation, sortings	3500	x68
1746C	Permutation Operations constructive algorithms, greedy, implementation, math	1300	x9933
1744C	Traffic Light binary search, implementation, two pointers	1000	x17510
1744B	Even-Odd Increments implementation, math	800	x19611
1744A	Number Replacement greedy, implementation	800	x22514
1743A	Password brute force, combinatorics, implementation, math	800	x22543
1742C	Stripes implementation	900	x23158
1742B	Increasing greedy, implementation, sortings	800	x32076
1742A	Sum implementation	800	x38762
1741A	Compare T-Shirt Sizes implementation, implementation, strings	800	x24941
1739A	Immobile Knight implementation	800	x20240
1738A	Glory Addicts greedy, implementation, sortings	800	x12549
1737D	Ela and the Wiring Wizard brute force, dp, graphs, greedy, implementation, shortest paths	2200	x1597
1737C	Ela and Crickets constructive algorithms, games, implementation, math	1500	x4656
1737B	Ela's Fitness and the Luxury Number binary search, implementation, math	1300	x7702
1737A	Ela Sorting Books greedy, implementation, strings	900	x8860
1736D	Equal Binary Subsequences constructive algorithms, geometry, greedy, implementation, strings	2200	x1992
1735C	Phase Shift dfs and similar, dsu, graphs, greedy, implementation, strings	1400	x7884
1732D1	Balance (Easy version) brute force, data structures, implementation, number theory	1500	x6226
1732C2	Sheikh (Hard Version) binary search, bitmasks, brute force, greedy, implementation, two pointers	2100	x1965
1732B	Ugu brute force, dp, greedy, implementation	900	x11287
1732A	Bestie brute force, combinatorics, constructive algorithms, implementation, math, number theory	1000	x11610
1730B	Meeting on the Line binary search, geometry, greedy, implementation, math, ternary search	1600	x9153
1728A	Colored Balls: Revisited brute force, greedy, implementation, sortings	800	x22482
1726H	Mainak and the Bleeding Polygon binary search, geometry, implementation, math	3500	x55
1722F	L-shapes dfs and similar, implementation	1700	x5128
1722E	Counting Rectangles brute force, data structures, dp, implementation	1600	x7454
1722C	Word Game data structures, implementation	800	x23705
1722B	Colourblindness implementation	800	x33035
1722A	Spell Check implementation	800	x34189
1721B	Deadly Laser implementation	1000	x18546
1721A	Image greedy, implementation	800	x23606
1720E	Misha and Paintings constructive algorithms, data structures, greedy, implementation, math	2700	x623
1720C	Corners greedy, implementation	1200	x13933
1719C	Fighting Tournament binary search, data structures, implementation, two pointers	1400	x10840
1718E	Impressionism constructive algorithms, graphs, implementation, math	3500	x74
1718B	Fibonacci Strings greedy, implementation, math, number theory	2000	x2301
1717F	Madoka and The First Session constructive algorithms, flows, graph matchings, graphs, implementation	2500	x406
1717B	Madoka and Underground Competitions constructive algorithms, implementation	1100	x13061
1716C	Robot in a Hallway data structures, dp, greedy, implementation, ternary search	2000	x3478
1715C	Monoblock combinatorics, data structures, implementation, math	1700	x7151
1714F	Build a Tree and That Is It constructive algorithms, implementation, trees	1900	x2452
1714B	Remove Prefix data structures, greedy, implementation	800	x24533
1714A	Everyone Loves to Sleep implementation, math	900	x23637
1713A	Traveling Salesman Problem geometry, greedy, implementation	800	x20158
1712A	Wonderful Permutation greedy, implementation	800	x22194
1710B	Rain binary search, brute force, data structures, geometry, greedy, implementation, math	2100	x1991

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