4SUM

You are given four sets of integers. Choose one integer from each set so that the four chosen numbers add up to $0$. You can assume that exactly one such choice exists.

The first line contains four integers $a$, $b$, $c$, and $d$, separated by spaces. They give the sizes of the four sets, and each one satisfies $1 \le a, b, c, d \le 500$.

The next $a + b + c + d$ lines each contain one element of a set. Every element is an integer no smaller than $-60000$ and no larger than $60000$. The elements of the first set come first, then the elements of the second set, then the third set, then the fourth set.

Print the four integers whose sum is $0$ on one line, separated by spaces. Order them the way their sets appear in the input.