@Doddy, This can be solved by a trivial solution something like -
a=0,b=0,c=1,d=1. The test suite will accept the solution, however, this is not something you want (only using non-zero integers as mentioned in the problem statement).
I have edited the test suite accordingly, and will do so wherever I face the same issue in the Number puzzle series.
Getting logical indexes
Find the Oldest Person in a Room
Number Puzzles - 007
Number Puzzles - 016
Matrix Pattern 3
Number Puzzles - 003
Matrix Pattern 7
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