Problemset - Codeforces

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Codeforces Round (Div. 2)
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constructive algorithms

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Problems

#	Name
1845A	Forbidden Integer constructive algorithms, implementation, math, number theory	800	x25610
1844G	Tree Weights bitmasks, constructive algorithms, data structures, dfs and similar, implementation, math, matrices, number theory, trees	3000	x674
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	x748
1844E	Great Grids 2-sat, constructive algorithms, dfs and similar, dsu, graphs	2400	x1703
1844D	Row Major constructive algorithms, greedy, math, number theory, strings	1400	x11930
1844B	Permutations & Primes constructive algorithms, math	1000	x17745
1844A	Subtraction Game constructive algorithms, games	800	x24157
1842D	Tenzing and His Animal Friends constructive algorithms, graphs, greedy	1900	x3969
1841A	Game with Board constructive algorithms, games	800	x24437
1840G2	In Search of Truth (Hard Version) constructive algorithms, interactive, math, meet-in-the-middle, probabilities	2500	x914
1840G1	In Search of Truth (Easy Version) constructive algorithms, interactive, math, meet-in-the-middle, probabilities	2200	x2270
1839E	Decreasing Game constructive algorithms, dfs and similar, dp, greedy, interactive	2400	x1180
1839C	Insert Zero and Invert Prefix constructive algorithms	1300	x11599
1838F	Stuck Conveyor binary search, constructive algorithms, interactive	3000	x306
1838C	No Prime Differences constructive algorithms, math, number theory	1400	x13833
1838B	Minimize Permutation Subarrays constructive algorithms, math	1100	x16056
1838A	Blackboard List constructive algorithms, math	800	x21247
1837D	Bracket Coloring constructive algorithms, greedy	1400	x13943
1837C	Best Binary String constructive algorithms, greedy	1000	x21469
1837A	Grasshopper on a Line constructive algorithms, math	800	x30396
1835C	Twin Clusters bitmasks, brute force, constructive algorithms, math, probabilities	2600	x951
1833G	Ksyusha and Chinchilla constructive algorithms, dfs and similar, dp, dsu, greedy, implementation, trees	1800	x5111
1833F	Ira and Flamenco combinatorics, constructive algorithms, data structures, implementation, math, sortings, two pointers	1700	x6966
1833D	Flipper brute force, constructive algorithms, greedy	1400	x12962
1832D2	Red-Blue Operations (Hard Version) binary search, constructive algorithms, greedy, implementation, math	2400	x1838
1831B	Array merging constructive algorithms, greedy	1000	x19385
1831A	Twin Permutations constructive algorithms	800	x25186
1828A	Divisible Array constructive algorithms, math	800	x23249
1827F	Copium Permutation constructive algorithms, data structures, greedy	3500	x113
1827E	Bus Routes binary search, constructive algorithms, dfs and similar, greedy, trees	3400	x371
1823D	Unique Palindromes constructive algorithms, math, strings	1900	x3726
1823A	A-characteristic combinatorics, constructive algorithms, math	800	x15932
1822D	Super-Permutation constructive algorithms, math	1200	x16176
1819C	The Fox and the Complete Tree Traversal constructive algorithms, dp, implementation, math, trees	2400	x1418
1818B	Indivisible constructive algorithms	900	x14403
1817D	Toy Machine constructive algorithms, games, implementation	2700	x692
1817B	Fish Graph brute force, constructive algorithms, dfs and similar, graphs	1900	x3955
1816B	Grid Reconstruction constructive algorithms, greedy	1000	x14943
1816A	Ian Visits Mary constructive algorithms, geometry, number theory	800	x17080
1815F	OH NO1 (-2-3-4) constructive algorithms, graphs, math	3500	x218
1815C	Between constructive algorithms, dfs and similar, graphs, greedy	2200	x1914
1815B	Sum Graph brute force, constructive algorithms, graphs, implementation, interactive, shortest paths, trees	2000	x2932
1814C	Search in Parallel constructive algorithms, greedy, sortings	1500	x10450
1812J	Unmysterious Language *special problem, constructive algorithms, strings		x5835
1812E	Not a Geometry Problem special problem, special problem, constructive algorithms, geometry, math		x3967
1812D	Trivial Conjecture *special problem, constructive algorithms, math, number theory		x4357
1811D	Umka and a Long Flight constructive algorithms, implementation, math	1600	x7207
1811C	Restore the Array constructive algorithms, greedy	1100	x19220
1810B	Candies constructive algorithms, math, number theory	800	x17284
1809D	Binary String Sorting constructive algorithms, greedy	1800	x6084
1809C	Sum on Subarrays constructive algorithms, greedy, math	1500	x12246
1806C	Sequence Master brute force, constructive algorithms, math	1600	x7373
1806B	Mex Master constructive algorithms, greedy	900	x17317
1801A	The Very Beautiful Blanket bitmasks, constructive algorithms	1600	x8297
1800E2	Unforgivable Curse (hard version) brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, strings	1500	x12337
1800E1	Unforgivable Curse (easy version) brute force, constructive algorithms, dsu, graphs, greedy, strings	1400	x12386
1799E	City Union constructive algorithms, dfs and similar, dsu, geometry, greedy, implementation, math	2300	x1171
1799B	Equalize by Divide brute force, constructive algorithms, greedy, math	1200	x11010
1798D	Shocking Arrangement constructive algorithms, greedy, math	1600	x9403
1797C	Li Hua and Chess constructive algorithms, greedy, interactive	1600	x7391
1797B	Li Hua and Pattern constructive algorithms, greedy	1100	x15131
1797A	Li Hua and Maze constructive algorithms, flows, graphs, greedy, implementation	800	x17122
1795F	Blocking Chips binary search, constructive algorithms, dfs and similar, greedy, trees	2400	x1078
1794B	Not Dividing constructive algorithms, greedy, math	900	x20614
1793C	Dora and Search constructive algorithms, data structures, two pointers	1200	x18930
1793B	Fedya and Array constructive algorithms, math	1100	x15488
1790G	Tokens on Graph constructive algorithms, dfs and similar, graphs, shortest paths	2300	x1085
1790E	Vlad and a Pair of Numbers bitmasks, constructive algorithms	1400	x14563
1789D	Serval and Shift-Shift-Shift bitmasks, brute force, constructive algorithms, implementation	2200	x1612
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	x16746
1788B	Sum of Two Numbers constructive algorithms, greedy, implementation, math, probabilities	1100	x19558
1787F	Inverse Transformation constructive algorithms, implementation, math	2500	x640
1787E	The Harmonization of XOR bitmasks, constructive algorithms, greedy, math	2100	x2227
1787A	Exponential Equation constructive algorithms, math	800	x18914
1784B	Letter Exchange constructive algorithms	1900	x3259
1783B	Matrix of Differences constructive algorithms, math	1100	x17467
1783A	Make it Beautiful constructive algorithms, math, sortings	800	x28371
1781G	Diverse Coloring constructive algorithms, trees	3200	x219
1781C	Equal Frequencies brute force, constructive algorithms, greedy, implementation, sortings, strings	1600	x7274
1780D	Bit Guessing Game binary search, bitmasks, constructive algorithms, interactive	1800	x4762
1780A	Hayato and School constructive algorithms, greedy	800	x21251
1779G	The Game of the Century constructive algorithms, graphs, shortest paths	3000	x309
1779F	Xorcerer's Stones bitmasks, constructive algorithms, dp, trees	2500	x1228
1779E	Anya's Simultaneous Exhibition constructive algorithms, graphs, greedy, interactive, sortings	2400	x1710
1779D	Boris and His Amazing Haircut constructive algorithms, data structures, dp, dsu, greedy, sortings	1700	x7649
1779B	MKnez's ConstructiveForces Task constructive algorithms, math	900	x23209
1779A	Hall of Fame constructive algorithms, greedy, strings	800	x22979
1776G	Another Wine Tasting Event combinatorics, constructive algorithms, math, strings	2100	x1977
1776F	Train Splitting constructive algorithms, graphs, greedy	1700	x3314
1776D	Teamwork constructive algorithms, greedy, math	2800	x349
1775F	Laboratory on Pluto constructive algorithms, dp, greedy, math	2500	x753
1775B	Gardener and the Array bitmasks, constructive algorithms	1300	x13114
1775A2	Gardener and the Capybaras (hard version) constructive algorithms, greedy	900	x18444
1775A1	Gardener and the Capybaras (easy version) brute force, constructive algorithms, implementation	800	x19430
1774H	Maximum Permutation constructive algorithms	3500	x131
1774G	Segment Covering brute force, combinatorics, constructive algorithms, data structures, dp, trees	3200	x426
1774D	Same Count One brute force, constructive algorithms, greedy, implementation, two pointers	1600	x7598
1774C	Ice and Fire constructive algorithms, dp, greedy	1300	x11756