The following creates 361 + 361 cells, not 361 x 361: 

my @a = ((0) x 361);
my @b = ((0) x 361);

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For* each of the 361 rows, you need to create 361 cells.

* — Hint!

In reply to Re: 2 D array by ikegami
in thread 2 D array by topaz

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