Problemset - Codeforces

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Codeforces Round (Div. 2)
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constructive algorithms

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Problems

#	Name
1852B	Imbalanced Arrays constructive algorithms, graphs, greedy, math, sortings, two pointers	1800	x4283
1851A	Escalator Conversations brute force, constructive algorithms, math	800	x29119
1849D	Array Painting constructive algorithms, greedy, two pointers	1700	x8133
1846F	Rudolph and Mimic constructive algorithms, implementation, interactive	1800	x2991
1846D	Rudolph and Christmas Tree constructive algorithms, geometry, math	1200	x18836
1846C	Rudolf and the Another Competition constructive algorithms, data structures, dp, greedy, sortings	1200	x18419
1845A	Forbidden Integer constructive algorithms, implementation, math, number theory	800	x25756
1844G	Tree Weights bitmasks, constructive algorithms, data structures, dfs and similar, implementation, math, matrices, number theory, trees	3000	x680
1844F2	Min Cost Permutation (Hard Version) binary search, constructive algorithms, data structures, greedy, math, sortings	2800	x377
1844F1	Min Cost Permutation (Easy Version) brute force, constructive algorithms, greedy, math	2600	x749
1844E	Great Grids 2-sat, constructive algorithms, dfs and similar, dsu, graphs	2400	x1815
1844D	Row Major constructive algorithms, greedy, math, number theory, strings	1400	x11969
1844B	Permutations & Primes constructive algorithms, math	1000	x17782
1844A	Subtraction Game constructive algorithms, games	800	x24198
1842D	Tenzing and His Animal Friends constructive algorithms, graphs, greedy	1900	x3987
1841A	Game with Board constructive algorithms, games	800	x24461
1840G2	In Search of Truth (Hard Version) constructive algorithms, interactive, math, meet-in-the-middle, probabilities	2500	x916
1840G1	In Search of Truth (Easy Version) constructive algorithms, interactive, math, meet-in-the-middle, probabilities	2200	x2276
1839E	Decreasing Game constructive algorithms, dfs and similar, dp, greedy, interactive	2400	x1185
1839C	Insert Zero and Invert Prefix constructive algorithms	1300	x11632
1838F	Stuck Conveyor binary search, constructive algorithms, interactive	3000	x306
1838C	No Prime Differences constructive algorithms, math, number theory	1400	x13895
1838B	Minimize Permutation Subarrays constructive algorithms, math	1100	x16074
1838A	Blackboard List constructive algorithms, math	800	x21277
1837D	Bracket Coloring constructive algorithms, greedy	1400	x14025
1837C	Best Binary String constructive algorithms, greedy	1000	x21517
1837A	Grasshopper on a Line constructive algorithms, math	800	x30560
1835C	Twin Clusters bitmasks, brute force, constructive algorithms, math, probabilities	2600	x954
1833G	Ksyusha and Chinchilla constructive algorithms, dfs and similar, dp, dsu, greedy, implementation, trees	1800	x5149
1833F	Ira and Flamenco combinatorics, constructive algorithms, data structures, implementation, math, sortings, two pointers	1700	x7030
1833D	Flipper brute force, constructive algorithms, greedy	1400	x13001
1832D2	Red-Blue Operations (Hard Version) binary search, constructive algorithms, greedy, implementation, math	2400	x1842
1831B	Array merging constructive algorithms, greedy	1000	x19513
1831A	Twin Permutations constructive algorithms	800	x25329
1828A	Divisible Array constructive algorithms, math	800	x23287
1827F	Copium Permutation constructive algorithms, data structures, greedy	3500	x114
1827E	Bus Routes binary search, constructive algorithms, dfs and similar, greedy, trees	3400	x371
1823D	Unique Palindromes constructive algorithms, math, strings	1900	x3738
1823A	A-characteristic combinatorics, constructive algorithms, math	800	x15948
1822D	Super-Permutation constructive algorithms, math	1200	x16269
1819C	The Fox and the Complete Tree Traversal constructive algorithms, dp, implementation, math, trees	2400	x1424
1818B	Indivisible constructive algorithms	900	x14462
1817D	Toy Machine constructive algorithms, games, implementation	2700	x717
1817B	Fish Graph brute force, constructive algorithms, dfs and similar, graphs	1900	x3969
1816B	Grid Reconstruction constructive algorithms, greedy	1000	x14977
1816A	Ian Visits Mary constructive algorithms, geometry, number theory	800	x17100
1815F	OH NO1 (-2-3-4) constructive algorithms, graphs, math	3500	x218
1815C	Between constructive algorithms, dfs and similar, graphs, greedy	2200	x1923
1815B	Sum Graph brute force, constructive algorithms, graphs, implementation, interactive, shortest paths, trees	2000	x2942
1814C	Search in Parallel constructive algorithms, greedy, sortings	1500	x10494
1812J	Unmysterious Language *special problem, constructive algorithms, strings		x5841
1812E	Not a Geometry Problem special problem, special problem, constructive algorithms, geometry, math		x3971
1812D	Trivial Conjecture *special problem, constructive algorithms, math, number theory		x4360
1811D	Umka and a Long Flight constructive algorithms, implementation, math	1600	x7236
1811C	Restore the Array constructive algorithms, greedy	1100	x19292
1810B	Candies constructive algorithms, math, number theory	800	x17296
1809D	Binary String Sorting constructive algorithms, greedy	1800	x6100
1809C	Sum on Subarrays constructive algorithms, greedy, math	1500	x12302
1806C	Sequence Master brute force, constructive algorithms, math	1600	x7405
1806B	Mex Master constructive algorithms, greedy	900	x17349
1801A	The Very Beautiful Blanket bitmasks, constructive algorithms	1600	x8338
1800E2	Unforgivable Curse (hard version) brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, strings	1500	x12378
1800E1	Unforgivable Curse (easy version) brute force, constructive algorithms, dsu, graphs, greedy, strings	1400	x12431
1799E	City Union constructive algorithms, dfs and similar, dsu, geometry, greedy, implementation, math	2300	x1173
1799B	Equalize by Divide brute force, constructive algorithms, greedy, math	1200	x11035
1798D	Shocking Arrangement constructive algorithms, greedy, math	1600	x9452
1797C	Li Hua and Chess constructive algorithms, greedy, interactive	1600	x7410
1797B	Li Hua and Pattern constructive algorithms, greedy	1100	x15217
1797A	Li Hua and Maze constructive algorithms, flows, graphs, greedy, implementation	800	x17152
1795F	Blocking Chips binary search, constructive algorithms, dfs and similar, greedy, trees	2400	x1080
1794B	Not Dividing constructive algorithms, greedy, math	900	x20792
1793C	Dora and Search constructive algorithms, data structures, two pointers	1200	x19055
1793B	Fedya and Array constructive algorithms, math	1100	x15516
1790G	Tokens on Graph constructive algorithms, dfs and similar, graphs, shortest paths	2300	x1089
1790E	Vlad and a Pair of Numbers bitmasks, constructive algorithms	1400	x14623
1789D	Serval and Shift-Shift-Shift bitmasks, brute force, constructive algorithms, implementation	2200	x1618
1788F	XOR, Tree, and Queries bitmasks, constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, trees	2500	x809
1788C	Matching Numbers constructive algorithms, greedy, math	1300	x16787
1788B	Sum of Two Numbers constructive algorithms, greedy, implementation, math, probabilities	1100	x19612
1787F	Inverse Transformation constructive algorithms, implementation, math	2500	x646
1787E	The Harmonization of XOR bitmasks, constructive algorithms, greedy, math	2100	x2253
1787A	Exponential Equation constructive algorithms, math	800	x18934
1784B	Letter Exchange constructive algorithms	1900	x3262
1783B	Matrix of Differences constructive algorithms, math	1100	x17492
1783A	Make it Beautiful constructive algorithms, math, sortings	800	x28513
1781G	Diverse Coloring constructive algorithms, trees	3200	x219
1781C	Equal Frequencies brute force, constructive algorithms, greedy, implementation, sortings, strings	1600	x7319
1780D	Bit Guessing Game binary search, bitmasks, constructive algorithms, interactive	1800	x4775
1780A	Hayato and School constructive algorithms, greedy	800	x21274
1779G	The Game of the Century constructive algorithms, graphs, shortest paths	3000	x309
1779F	Xorcerer's Stones bitmasks, constructive algorithms, dp, trees	2500	x1233
1779E	Anya's Simultaneous Exhibition constructive algorithms, graphs, greedy, interactive, sortings	2400	x1711
1779D	Boris and His Amazing Haircut constructive algorithms, data structures, dp, dsu, greedy, sortings	1700	x7673
1779B	MKnez's ConstructiveForces Task constructive algorithms, math	900	x23236
1779A	Hall of Fame constructive algorithms, greedy, strings	800	x23000
1776G	Another Wine Tasting Event combinatorics, constructive algorithms, math, strings	2100	x1981
1776F	Train Splitting constructive algorithms, graphs, greedy	1700	x3326
1776D	Teamwork constructive algorithms, greedy, math	2800	x349
1775F	Laboratory on Pluto constructive algorithms, dp, greedy, math	2500	x754
1775B	Gardener and the Array bitmasks, constructive algorithms	1300	x13187