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Computer Science
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Joffan's user avatar
Joffan's user avatar
Joffan
  • Member for 3 years, 8 months
  • Last seen more than 1 year ago
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Interested in efficiency, graphs, number theory, puzzles, efficiency and much else

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Top posts
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2
Longest sequence of dominoes
Mar 27, 2021
answer
2
Proving NP-hardness of Hamiltonian Cycle problem variant
Mar 30, 2021
answer
1
Shortest traverse path in a matrix given the start point $(i,j)$
Mar 30, 2021
answer
1
Bipartite Graph to solve the wolf river crossing problem
Apr 10, 2021
answer
0
Listing integers as the sum of three squares $m = x^2 + y^2 + z^2$
Mar 25, 2021
Top network posts
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81
Prove that the equation $x^2-y^2 = 2002$ has no integer solution
55
How many subsets of set $\{1,2,\ldots,10\}$ contain at least one odd integer?
53
Every point of a grid is colored in blue, red or green. How to prove there is a monochromatic rectangle?
53
Where does the constant increase by 2 of differences between integer square values come from?
50
Is there a combinatorial interpretation of the triangular numbers?