I remembered this cartoon by reading the problem:
I'll have to think how to incorporate the stabbing in the problem... :)
I have the feeling it's a cheat no ? We don't stay in the problem's definitions.
textbook solution, nice!
Back to basics 5 - Clipboard
Back to basics 8 - Matrix Diagonals
Sum the entries of each column of a matrix which satisfy a logical condition.
Symmetry of vector
Is it a number?
singularity 2.0 (easier)
Five steps to enlightenment
Clockwise or Counterclockwise
yet another flying fly (YAFF)
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