The cows are playing bingo and FJ is watching. You've probably played bingo: Given a 5 x 5 array of unique small integers, your goal is to fill in five in a row either horizontally, verttically, or on one of the two diagonals. Some bingo cards have a 'free' spot in the middle; the cows' bingo cards do not.
Bessie wants to know what numbers she should cheer for. She has a partially filled in bingo card (i.e., at least one number has been picked). Your job is to figure out which number(s) she wants in order to win most quickly (i.e., the smallest set of numbers that will get her to a victory).
The smallest set is unique for all the sample cards.

Lines 1..5: Each line contains five space-separated integers that are one row of a bingo card. Those numbers which have already been called are represented as the negative version of themselves (i.e., -7 means 7 has already been called).

Line 1: Between one and four integers that will get Betsy to a win with the shortest number of bingo draws. The numbers should be presented in ascending order.

1 2 3 4 5
-6 -7 8 -9 -10
11 12 13 14 15
16 17 18 19 20
21 22 23 24 25

8