Does r=uint64(308436464205151562) make sense? It seems like the argument to uint64 is a double precision number, so you have already lost the precision you are trying to gain by using uint64.
r=uint64(308436464205151562) outputs for uint64(r) 308436464205151562. However, r=308436464205151562 outputs for uint64(r) 308436464205151552. A very small loss in precision, but still a loss. The Challenge set has some numbers that use all the paint if full precision math was used. If residual paint was required as an output then full precision is needed. For solutions using p=p-2*r-1 the errors in r and p may cause issues.
Very novel input parameter adjustment to allow direct solution.
Nice bisecting search method and anonymous function for clean appearance.
Make an N-dimensional Multiplication Table
Sorted highest to lowest?
Are you in or are you out?
Multiply to the limit?
USC Spring 2012 ACM: Armageddon
GJam: 2013 China Event: Name Sorting
Remove NaNs and numbers adjacent to NaNs
GJam 2012 Qualifier: Tongues
PACMAT 08 - Awesome Tunneling Ghosts, 2X Speed, 6 Lives, Game Download
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