$0 = 0
$1 = 0
while(A[$0 + 1, $1 + 1]==B[$0 + 1, $1 + 1])
	$1 = $1 + 1
	$0 = $0 + ($1 / (W))
	$1 = ($1 % W)
end

return($0 + 1, $1 + 1)