input = 123456789, output = 1+2+3+4+5+6+7+8+9 = 45
Does the size of the solution include the size of functions that have been called?
Convert a vector into a number
Who has power to do everything in this world?
Length of a short side
Find out total non zero element of matrix
concatenate the elements
determine the sum of the squares
No more zeros
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