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.
Stuff the Board
Spherical radius given four points
Arrange vector in ascending order
Check if number exists in vector
There are 10 types of people in the world
Sum of big primes without primes
Expression or variable?
Permute diagonal and antidiagonal
Can you beat the lottery again (for hardcore coder) ?
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