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?
Project Euler: Problem 10, Sum of Primes
Swap the input arguments
Multiply 2 numbers
Who has power to do everything in this world?
Reverse a string
determine the sum of the squares
No more zeros
concatenate the elements
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