In the place of "Find the sum of all products whose...", I would say: "Find the number of all products whose..." ;-)
Why  instead of 0?
Since I have kludged a solution together, can I have a hint?
this solution works on my comupter
I see the first test command line is corrupted
:( :( :(
I've fixed that first line in the test suite. Try it again.
Compute a dot product of two vectors x and y
matrix of natural number
Is it a number?
Can we make a triangle?
Is this is a Tic Tac Toe X Win?
Pandigital number n°2 (Inspired by Project Euler 32)
Divisors for big integer
Negation and new variables
BLOCK x3 (Version 1)
Mysterious digits operation (easy)
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