Problemset - Codeforces

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Codeforces Round 946 (Div. 3)
25:37:01
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constructive algorithms

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Problems

#	Name
1838C	No Prime Differences constructive algorithms, math, number theory	1400	x13508
1838B	Minimize Permutation Subarrays constructive algorithms, math	1100	x15850
1838A	Blackboard List constructive algorithms, math	800	x21086
1837D	Bracket Coloring constructive algorithms, greedy	1400	x13435
1837C	Best Binary String constructive algorithms, greedy	1000	x21157
1837A	Grasshopper on a Line constructive algorithms, math	800	x29278
1835C	Twin Clusters bitmasks, brute force, constructive algorithms, math, probabilities	2600	x940
1833G	Ksyusha and Chinchilla constructive algorithms, dfs and similar, dp, dsu, greedy, implementation, trees	1800	x4962
1833F	Ira and Flamenco combinatorics, constructive algorithms, data structures, implementation, math, sortings, two pointers	1700	x6745
1833D	Flipper brute force, constructive algorithms, greedy	1400	x12730
1832D2	Red-Blue Operations (Hard Version) binary search, constructive algorithms, greedy, implementation, math	2400	x1800
1831B	Array merging constructive algorithms, greedy	1000	x18598
1831A	Twin Permutations constructive algorithms	800	x24360
1828A	Divisible Array constructive algorithms, math	800	x23044
1827F	Copium Permutation constructive algorithms, data structures, greedy	3500	x107
1827E	Bus Routes binary search, constructive algorithms, dfs and similar, greedy, trees	3400	x363
1823D	Unique Palindromes constructive algorithms, math, strings	1900	x3663
1823A	A-characteristic combinatorics, constructive algorithms, math	800	x15827
1822D	Super-Permutation constructive algorithms, math	1200	x15950
1819C	The Fox and the Complete Tree Traversal constructive algorithms, dp, implementation, math, trees	2400	x1398
1818B	Indivisible constructive algorithms	900	x14078
1817D	Toy Machine constructive algorithms, games, implementation	2700	x670
1817B	Fish Graph brute force, constructive algorithms, dfs and similar, graphs	1900	x3878
1816B	Grid Reconstruction constructive algorithms, greedy	1000	x14720
1816A	Ian Visits Mary constructive algorithms, geometry, number theory	800	x16950
1815F	OH NO1 (-2-3-4) constructive algorithms, graphs, math	3500	x214
1815C	Between constructive algorithms, dfs and similar, graphs, greedy	2200	x1873
1815B	Sum Graph brute force, constructive algorithms, graphs, implementation, interactive, shortest paths, trees	2000	x2869
1814C	Search in Parallel constructive algorithms, greedy, sortings	1500	x10215
1812J	Unmysterious Language *special problem, constructive algorithms, strings		x5798
1812E	Not a Geometry Problem special problem, special problem, constructive algorithms, geometry, math		x3950
1812D	Trivial Conjecture *special problem, constructive algorithms, math, number theory		x4341
1811D	Umka and a Long Flight constructive algorithms, implementation, math	1600	x7064
1811C	Restore the Array constructive algorithms, greedy	1100	x18956
1810B	Candies constructive algorithms, math, number theory	800	x17170
1809D	Binary String Sorting constructive algorithms, greedy	1800	x5911
1809C	Sum on Subarrays constructive algorithms, greedy, math	1500	x11956
1806C	Sequence Master brute force, constructive algorithms, math	1600	x7223
1806B	Mex Master constructive algorithms, greedy	900	x17062
1801A	The Very Beautiful Blanket bitmasks, constructive algorithms	1600	x8138
1800E2	Unforgivable Curse (hard version) brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, strings	1500	x12104
1800E1	Unforgivable Curse (easy version) brute force, constructive algorithms, dsu, graphs, greedy, strings	1400	x12189
1799E	City Union constructive algorithms, dfs and similar, dsu, geometry, greedy, implementation, math	2300	x1157
1799B	Equalize by Divide brute force, constructive algorithms, greedy, math	1200	x10843
1798D	Shocking Arrangement constructive algorithms, greedy, math	1600	x9104
1797C	Li Hua and Chess constructive algorithms, greedy, interactive	1600	x7254
1797B	Li Hua and Pattern constructive algorithms, greedy	1100	x14598
1797A	Li Hua and Maze constructive algorithms, flows, graphs, greedy, implementation	800	x16960
1795F	Blocking Chips binary search, constructive algorithms, dfs and similar, greedy, trees	2400	x1055
1794B	Not Dividing constructive algorithms, greedy, math	900	x19639
1793C	Dora and Search constructive algorithms, data structures, two pointers	1200	x18244
1793B	Fedya and Array constructive algorithms, math	1100	x15262
1790G	Tokens on Graph constructive algorithms, dfs and similar, graphs, shortest paths	2300	x1060
1790E	Vlad and a Pair of Numbers bitmasks, constructive algorithms	1400	x14227
1789D	Serval and Shift-Shift-Shift bitmasks, brute force, constructive algorithms, implementation	2200	x1580
1788F	XOR, Tree, and Queries bitmasks, constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, trees	2500	x796
1788C	Matching Numbers constructive algorithms, greedy, math	1300	x16509
1788B	Sum of Two Numbers constructive algorithms, greedy, implementation, math, probabilities	1100	x19297
1787F	Inverse Transformation constructive algorithms, implementation, math	2500	x632
1787E	The Harmonization of XOR bitmasks, constructive algorithms, greedy, math	2100	x2186
1787A	Exponential Equation constructive algorithms, math	800	x18764
1784B	Letter Exchange constructive algorithms	1900	x3220
1783B	Matrix of Differences constructive algorithms, math	1100	x17197
1783A	Make it Beautiful constructive algorithms, math, sortings	800	x27420
1781G	Diverse Coloring constructive algorithms, trees	3200	x215
1781C	Equal Frequencies brute force, constructive algorithms, greedy, implementation, sortings, strings	1600	x7085
1780D	Bit Guessing Game binary search, bitmasks, constructive algorithms, interactive	1800	x4657
1780A	Hayato and School constructive algorithms, greedy	800	x21092
1779G	The Game of the Century constructive algorithms, graphs, shortest paths	3000	x302
1779F	Xorcerer's Stones bitmasks, constructive algorithms, dp, trees	2500	x1222
1779E	Anya's Simultaneous Exhibition constructive algorithms, graphs, greedy, interactive, sortings	2400	x1692
1779D	Boris and His Amazing Haircut constructive algorithms, data structures, dp, dsu, greedy, sortings	1700	x7532
1779B	MKnez's ConstructiveForces Task constructive algorithms, math	900	x23044
1779A	Hall of Fame constructive algorithms, greedy, strings	800	x22904
1776G	Another Wine Tasting Event combinatorics, constructive algorithms, math, strings	2100	x1956
1776F	Train Splitting constructive algorithms, graphs, greedy	1700	x3248
1776D	Teamwork constructive algorithms, greedy, math	2800	x339
1775F	Laboratory on Pluto constructive algorithms, dp, greedy, math	2500	x743
1775B	Gardener and the Array bitmasks, constructive algorithms	1300	x12624
1775A2	Gardener and the Capybaras (hard version) constructive algorithms, greedy	900	x18303
1775A1	Gardener and the Capybaras (easy version) brute force, constructive algorithms, implementation	800	x19331
1774H	Maximum Permutation constructive algorithms	3500	x129
1774G	Segment Covering brute force, combinatorics, constructive algorithms, data structures, dp, trees	3200	x368
1774D	Same Count One brute force, constructive algorithms, greedy, implementation, two pointers	1600	x7448
1774C	Ice and Fire constructive algorithms, dp, greedy	1300	x11584
1774B	Coloring constructive algorithms, greedy, math	1500	x11623
1774A	Add Plus Minus Sign constructive algorithms, math	800	x21998
1773K	King's Puzzle constructive algorithms	1900	x1383
1773J	Jumbled Trees constructive algorithms, math	2900	x102
1773F	Football constructive algorithms	800	x3952
1773A	Amazing Trick constructive algorithms, graph matchings, math, probabilities	1900	x1482
1772F	Copy of a Copy of a Copy constructive algorithms, dfs and similar, graphs, implementation, sortings	2000	x2235
1772D	Absolute Sorting constructive algorithms, math	1400	x14994
1772C	Different Differences constructive algorithms, greedy, math	1000	x22733
1771B	Hossam and Friends binary search, constructive algorithms, dp, two pointers	1400	x12921
1770H	Koxia, Mahiru and Winter Festival constructive algorithms	3500	x99
1770D	Koxia and Game constructive algorithms, data structures, dfs and similar, dsu, flows, games, graph matchings, graphs, implementation	2000	x3679
1770B	Koxia and Permutation constructive algorithms	1000	x19033
1768D	Lucky Permutation constructive algorithms, dfs and similar, graphs, greedy	1800	x6721
1768C	Elemental Decompress constructive algorithms, greedy, implementation, sortings	1300	x13597