# Day 25 of 31-Day May LeetCode Challenge

1 min readMay 25, 2020

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We write the integers of `A`

and `B`

(in the order they are given) on two separate horizontal lines.

Now, we may draw *connecting lines*: a straight line connecting two numbers `A[i]`

and `B[j]`

such that:

`A[i] == B[j]`

;- The line we draw does not intersect any other connecting (non-horizontal) line.

Note that a connecting lines cannot intersect even at the endpoints: each number can only belong to one connecting line.

Return the maximum number of connecting lines we can draw in this way.