Problemset - Codeforces

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Codeforces Round 940 (Div. 2) and CodeCraft-23
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constructive algorithms

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Problems

#	Name
1817D	Toy Machine constructive algorithms, games, implementation	2700	x661
1817B	Fish Graph brute force, constructive algorithms, dfs and similar, graphs	1900	x3803
1816B	Grid Reconstruction constructive algorithms, greedy	1000	x14642
1816A	Ian Visits Mary constructive algorithms, geometry, number theory	800	x16886
1815F	OH NO1 (-2-3-4) constructive algorithms, graphs, math	3500	x211
1815C	Between constructive algorithms, dfs and similar, graphs, greedy	2200	x1837
1815B	Sum Graph brute force, constructive algorithms, graphs, implementation, interactive, shortest paths, trees	2000	x2822
1814C	Search in Parallel constructive algorithms, greedy, sortings	1500	x10094
1812J	Unmysterious Language *special problem, constructive algorithms, strings		x5776
1812E	Not a Geometry Problem special problem, special problem, constructive algorithms, geometry, math		x3930
1812D	Trivial Conjecture *special problem, constructive algorithms, math, number theory		x4325
1811D	Umka and a Long Flight constructive algorithms, implementation, math	1600	x6982
1811C	Restore the Array constructive algorithms, greedy	1100	x18782
1810B	Candies constructive algorithms, math, number theory	800	x17097
1809D	Binary String Sorting constructive algorithms, greedy	1800	x5830
1809C	Sum on Subarrays constructive algorithms, greedy, math	1500	x11814
1806C	Sequence Master brute force, constructive algorithms, math	1600	x7146
1806B	Mex Master constructive algorithms, greedy	900	x16985
1801A	The Very Beautiful Blanket bitmasks, constructive algorithms	1600	x8055
1800E2	Unforgivable Curse (hard version) brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, strings	1500	x11947
1800E1	Unforgivable Curse (easy version) brute force, constructive algorithms, dsu, graphs, greedy, strings	1400	x12061
1799E	City Union constructive algorithms, dfs and similar, dsu, geometry, greedy, implementation, math	2300	x1147
1799B	Equalize by Divide brute force, constructive algorithms, greedy, math	1200	x10772
1798D	Shocking Arrangement constructive algorithms, greedy, math	1600	x8936
1797C	Li Hua and Chess constructive algorithms, greedy, interactive	1600	x7178
1797B	Li Hua and Pattern constructive algorithms, greedy	1100	x14371
1797A	Li Hua and Maze constructive algorithms, flows, graphs, greedy, implementation	800	x16869
1795F	Blocking Chips binary search, constructive algorithms, dfs and similar, greedy, trees	2400	x1037
1794B	Not Dividing constructive algorithms, greedy, math	900	x19195
1793C	Dora and Search constructive algorithms, data structures, two pointers	1200	x17945
1793B	Fedya and Array constructive algorithms, math	1100	x15157
1790G	Tokens on Graph constructive algorithms, dfs and similar, graphs, shortest paths	2300	x1039
1790E	Vlad and a Pair of Numbers bitmasks, constructive algorithms	1400	x14089
1789D	Serval and Shift-Shift-Shift bitmasks, brute force, constructive algorithms, implementation	2200	x1557
1788F	XOR, Tree, and Queries bitmasks, constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, trees	2500	x776
1788C	Matching Numbers constructive algorithms, greedy, math	1300	x16362
1788B	Sum of Two Numbers constructive algorithms, greedy, implementation, math, probabilities	1100	x19149
1787F	Inverse Transformation constructive algorithms, implementation, math	2500	x624
1787E	The Harmonization of XOR bitmasks, constructive algorithms, greedy, math	2100	x2163
1787A	Exponential Equation constructive algorithms, math	800	x18660
1784B	Letter Exchange constructive algorithms	1900	x3198
1783B	Matrix of Differences constructive algorithms, math	1100	x17103
1783A	Make it Beautiful constructive algorithms, math, sortings	800	x26986
1781G	Diverse Coloring constructive algorithms, trees	3200	x212
1781C	Equal Frequencies brute force, constructive algorithms, greedy, implementation, sortings, strings	1600	x6981
1780D	Bit Guessing Game binary search, bitmasks, constructive algorithms, interactive	1800	x4625
1780A	Hayato and School constructive algorithms, greedy	800	x21030
1779G	The Game of the Century constructive algorithms, graphs, shortest paths	3000	x299
1779F	Xorcerer's Stones bitmasks, constructive algorithms, dp, trees	2500	x1213
1779E	Anya's Simultaneous Exhibition constructive algorithms, graphs, greedy, interactive, sortings	2400	x1684
1779D	Boris and His Amazing Haircut constructive algorithms, data structures, dp, dsu, greedy, sortings	1700	x7438
1779B	MKnez's ConstructiveForces Task constructive algorithms, math	900	x22938
1779A	Hall of Fame constructive algorithms, greedy, strings	800	x22860
1776G	Another Wine Tasting Event combinatorics, constructive algorithms, math, strings	2100	x1938
1776F	Train Splitting constructive algorithms, graphs, greedy	1700	x3197
1776D	Teamwork constructive algorithms, greedy, math	2800	x332
1775F	Laboratory on Pluto constructive algorithms, dp, greedy, math	2500	x729
1775B	Gardener and the Array bitmasks, constructive algorithms	1300	x12294
1775A2	Gardener and the Capybaras (hard version) constructive algorithms, greedy	900	x18232
1775A1	Gardener and the Capybaras (easy version) brute force, constructive algorithms, implementation	800	x19280
1774H	Maximum Permutation constructive algorithms	3500	x127
1774G	Segment Covering brute force, combinatorics, constructive algorithms, data structures, dp, trees	3200	x357
1774D	Same Count One brute force, constructive algorithms, greedy, implementation, two pointers	1600	x7362
1774C	Ice and Fire constructive algorithms, dp, greedy	1300	x11499
1774B	Coloring constructive algorithms, greedy, math	1500	x11494
1774A	Add Plus Minus Sign constructive algorithms, math	800	x21909
1773K	King's Puzzle constructive algorithms	1900	x1372
1773J	Jumbled Trees constructive algorithms, math	2900	x95
1773F	Football constructive algorithms	800	x3937
1773A	Amazing Trick constructive algorithms, graph matchings, math, probabilities	1900	x1466
1772F	Copy of a Copy of a Copy constructive algorithms, dfs and similar, graphs, implementation, sortings	2000	x2213
1772D	Absolute Sorting constructive algorithms, math	1400	x14807
1772C	Different Differences constructive algorithms, greedy, math	1000	x22599
1771B	Hossam and Friends binary search, constructive algorithms, dp, two pointers	1400	x12709
1770H	Koxia, Mahiru and Winter Festival constructive algorithms	3500	x87
1770D	Koxia and Game constructive algorithms, data structures, dfs and similar, dsu, flows, games, graph matchings, graphs, implementation	2000	x3645
1770B	Koxia and Permutation constructive algorithms	1000	x18985
1768D	Lucky Permutation constructive algorithms, dfs and similar, graphs, greedy	1800	x6657
1768C	Elemental Decompress constructive algorithms, greedy, implementation, sortings	1300	x13499
1767D	Playoff combinatorics, constructive algorithms, dp, greedy, math	1500	x9359
1765G	Guess the String constructive algorithms, interactive, probabilities	2600	x364
1765D	Watch the Videos binary search, constructive algorithms, two pointers	1700	x3877
1764F	Doremy's Experimental Tree brute force, constructive algorithms, dfs and similar, dsu, sortings, trees	2500	x874
1763C	Another Array Problem brute force, constructive algorithms, greedy	2000	x6248
1763A	Absolute Maximization bitmasks, constructive algorithms, greedy, math	800	x15190
1762G	Unequal Adjacent Elements constructive algorithms, sortings	3100	x96
1762D	GCD Queries constructive algorithms, interactive, number theory	2100	x3267
1762B	Make Array Good constructive algorithms, implementation, number theory, sortings	1100	x16137
1761E	Make It Connected binary search, brute force, constructive algorithms, dsu, graphs, greedy, matrices, trees, two pointers	2400	x1715
1761C	Set Construction constructive algorithms, dfs and similar, graphs, greedy	1400	x9125
1761B	Elimination of a Ring constructive algorithms, greedy, implementation	1000	x12969
1761A	Two Permutations brute force, constructive algorithms	800	x16667
1759G	Restore the Permutation binary search, constructive algorithms, data structures, greedy, math	1900	x4195
1758F	Decent Division constructive algorithms, data structures	3000	x151
1758D	Range = √Sum binary search, brute force, constructive algorithms, math, two pointers	1800	x6819
1758B	XOR = Average constructive algorithms	900	x20028
1758A	SSeeeeiinngg DDoouubbllee constructive algorithms, strings	800	x24273
1754B	Kevin and Permutation constructive algorithms, greedy, math	800	x18444
1753D	The Beach constructive algorithms, dfs and similar, graphs, shortest paths	2400	x1656
1753A2	Make Nonzero Sum (hard version) constructive algorithms, dp, greedy	1500	x9726