Problemset - Codeforces

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Codeforces Round 950 (Div. 3)
2 days
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constructive algorithms

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Problems

#	Name
1840G2	In Search of Truth (Hard Version) constructive algorithms, interactive, math, meet-in-the-middle, probabilities	2500	x905
1840G1	In Search of Truth (Easy Version) constructive algorithms, interactive, math, meet-in-the-middle, probabilities	2200	x2248
1839E	Decreasing Game constructive algorithms, dfs and similar, dp, greedy, interactive	2400	x1167
1839C	Insert Zero and Invert Prefix constructive algorithms	1300	x11451
1838F	Stuck Conveyor binary search, constructive algorithms, interactive	3000	x303
1838C	No Prime Differences constructive algorithms, math, number theory	1400	x13598
1838B	Minimize Permutation Subarrays constructive algorithms, math	1100	x15892
1838A	Blackboard List constructive algorithms, math	800	x21124
1837D	Bracket Coloring constructive algorithms, greedy	1400	x13623
1837C	Best Binary String constructive algorithms, greedy	1000	x21236
1837A	Grasshopper on a Line constructive algorithms, math	800	x29588
1835C	Twin Clusters bitmasks, brute force, constructive algorithms, math, probabilities	2600	x946
1833G	Ksyusha and Chinchilla constructive algorithms, dfs and similar, dp, dsu, greedy, implementation, trees	1800	x4987
1833F	Ira and Flamenco combinatorics, constructive algorithms, data structures, implementation, math, sortings, two pointers	1700	x6817
1833D	Flipper brute force, constructive algorithms, greedy	1400	x12791
1832D2	Red-Blue Operations (Hard Version) binary search, constructive algorithms, greedy, implementation, math	2400	x1809
1831B	Array merging constructive algorithms, greedy	1000	x18786
1831A	Twin Permutations constructive algorithms	800	x24571
1828A	Divisible Array constructive algorithms, math	800	x23097
1827F	Copium Permutation constructive algorithms, data structures, greedy	3500	x111
1827E	Bus Routes binary search, constructive algorithms, dfs and similar, greedy, trees	3400	x365
1823D	Unique Palindromes constructive algorithms, math, strings	1900	x3674
1823A	A-characteristic combinatorics, constructive algorithms, math	800	x15856
1822D	Super-Permutation constructive algorithms, math	1200	x16018
1819C	The Fox and the Complete Tree Traversal constructive algorithms, dp, implementation, math, trees	2400	x1406
1818B	Indivisible constructive algorithms	900	x14144
1817D	Toy Machine constructive algorithms, games, implementation	2700	x676
1817B	Fish Graph brute force, constructive algorithms, dfs and similar, graphs	1900	x3897
1816B	Grid Reconstruction constructive algorithms, greedy	1000	x14809
1816A	Ian Visits Mary constructive algorithms, geometry, number theory	800	x16979
1815F	OH NO1 (-2-3-4) constructive algorithms, graphs, math	3500	x215
1815C	Between constructive algorithms, dfs and similar, graphs, greedy	2200	x1883
1815B	Sum Graph brute force, constructive algorithms, graphs, implementation, interactive, shortest paths, trees	2000	x2880
1814C	Search in Parallel constructive algorithms, greedy, sortings	1500	x10276
1812J	Unmysterious Language *special problem, constructive algorithms, strings		x5809
1812E	Not a Geometry Problem special problem, special problem, constructive algorithms, geometry, math		x3953
1812D	Trivial Conjecture *special problem, constructive algorithms, math, number theory		x4345
1811D	Umka and a Long Flight constructive algorithms, implementation, math	1600	x7105
1811C	Restore the Array constructive algorithms, greedy	1100	x19036
1810B	Candies constructive algorithms, math, number theory	800	x17205
1809D	Binary String Sorting constructive algorithms, greedy	1800	x5941
1809C	Sum on Subarrays constructive algorithms, greedy, math	1500	x12020
1806C	Sequence Master brute force, constructive algorithms, math	1600	x7269
1806B	Mex Master constructive algorithms, greedy	900	x17112
1801A	The Very Beautiful Blanket bitmasks, constructive algorithms	1600	x8188
1800E2	Unforgivable Curse (hard version) brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, strings	1500	x12173
1800E1	Unforgivable Curse (easy version) brute force, constructive algorithms, dsu, graphs, greedy, strings	1400	x12235
1799E	City Union constructive algorithms, dfs and similar, dsu, geometry, greedy, implementation, math	2300	x1164
1799B	Equalize by Divide brute force, constructive algorithms, greedy, math	1200	x10893
1798D	Shocking Arrangement constructive algorithms, greedy, math	1600	x9192
1797C	Li Hua and Chess constructive algorithms, greedy, interactive	1600	x7289
1797B	Li Hua and Pattern constructive algorithms, greedy	1100	x14740
1797A	Li Hua and Maze constructive algorithms, flows, graphs, greedy, implementation	800	x17005
1795F	Blocking Chips binary search, constructive algorithms, dfs and similar, greedy, trees	2400	x1070
1794B	Not Dividing constructive algorithms, greedy, math	900	x19885
1793C	Dora and Search constructive algorithms, data structures, two pointers	1200	x18403
1793B	Fedya and Array constructive algorithms, math	1100	x15301
1790G	Tokens on Graph constructive algorithms, dfs and similar, graphs, shortest paths	2300	x1074
1790E	Vlad and a Pair of Numbers bitmasks, constructive algorithms	1400	x14320
1789D	Serval and Shift-Shift-Shift bitmasks, brute force, constructive algorithms, implementation	2200	x1590
1788F	XOR, Tree, and Queries bitmasks, constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, trees	2500	x801
1788C	Matching Numbers constructive algorithms, greedy, math	1300	x16578
1788B	Sum of Two Numbers constructive algorithms, greedy, implementation, math, probabilities	1100	x19358
1787F	Inverse Transformation constructive algorithms, implementation, math	2500	x635
1787E	The Harmonization of XOR bitmasks, constructive algorithms, greedy, math	2100	x2198
1787A	Exponential Equation constructive algorithms, math	800	x18806
1784B	Letter Exchange constructive algorithms	1900	x3236
1783B	Matrix of Differences constructive algorithms, math	1100	x17263
1783A	Make it Beautiful constructive algorithms, math, sortings	800	x27714
1781G	Diverse Coloring constructive algorithms, trees	3200	x217
1781C	Equal Frequencies brute force, constructive algorithms, greedy, implementation, sortings, strings	1600	x7140
1780D	Bit Guessing Game binary search, bitmasks, constructive algorithms, interactive	1800	x4691
1780A	Hayato and School constructive algorithms, greedy	800	x21134
1779G	The Game of the Century constructive algorithms, graphs, shortest paths	3000	x305
1779F	Xorcerer's Stones bitmasks, constructive algorithms, dp, trees	2500	x1225
1779E	Anya's Simultaneous Exhibition constructive algorithms, graphs, greedy, interactive, sortings	2400	x1707
1779D	Boris and His Amazing Haircut constructive algorithms, data structures, dp, dsu, greedy, sortings	1700	x7564
1779B	MKnez's ConstructiveForces Task constructive algorithms, math	900	x23092
1779A	Hall of Fame constructive algorithms, greedy, strings	800	x22930
1776G	Another Wine Tasting Event combinatorics, constructive algorithms, math, strings	2100	x1965
1776F	Train Splitting constructive algorithms, graphs, greedy	1700	x3272
1776D	Teamwork constructive algorithms, greedy, math	2800	x343
1775F	Laboratory on Pluto constructive algorithms, dp, greedy, math	2500	x745
1775B	Gardener and the Array bitmasks, constructive algorithms	1300	x12744
1775A2	Gardener and the Capybaras (hard version) constructive algorithms, greedy	900	x18344
1775A1	Gardener and the Capybaras (easy version) brute force, constructive algorithms, implementation	800	x19357
1774H	Maximum Permutation constructive algorithms	3500	x130
1774G	Segment Covering brute force, combinatorics, constructive algorithms, data structures, dp, trees	3200	x388
1774D	Same Count One brute force, constructive algorithms, greedy, implementation, two pointers	1600	x7474
1774C	Ice and Fire constructive algorithms, dp, greedy	1300	x11639
1774B	Coloring constructive algorithms, greedy, math	1500	x11674
1774A	Add Plus Minus Sign constructive algorithms, math	800	x22040
1773K	King's Puzzle constructive algorithms	1900	x1385
1773J	Jumbled Trees constructive algorithms, math	2900	x103
1773F	Football constructive algorithms	800	x3962
1773A	Amazing Trick constructive algorithms, graph matchings, math, probabilities	1900	x1488
1772F	Copy of a Copy of a Copy constructive algorithms, dfs and similar, graphs, implementation, sortings	2000	x2245
1772D	Absolute Sorting constructive algorithms, math	1400	x15087
1772C	Different Differences constructive algorithms, greedy, math	1000	x22795
1771B	Hossam and Friends binary search, constructive algorithms, dp, two pointers	1400	x13098