Two arrays

Input

First, the number $n$ of elements in the first array is given, followed by $n$ integers—the elements of the first array. Then, the number $m$ of elements in the second array is given, followed by the $m$ elements of the second array. The number of elements in each array does not exceed $100$. All elements are integers.

Output

Print the number of required elements in the first line. In the second line, print those elements of the first array that are absent in the second array, in the same order as in the first array.

Examples