PE Class

Problem Description

The PE teacher has a list of students who like badminton and a list of students who like basketball: $\,n\,$ students like badminton and $\,m\,$ students like basketball. He now wants to know which students like both basketball and badminton.

Input Format

The first line contains two positive integers $\,n, m\,$ ($1 \le n, m \le 100$).

The second line contains $\,n\,$ integers $\,a_1, a_2, \dots, a_n\,$, the ids of students who like badminton ($1 \le a_i \le 100$).

The third line contains $\,m\,$ integers $\,b_1, b_2, \dots, b_m\,$, the ids of students who like basketball ($1 \le b_i \le 100$).

Output Format

Output, in ascending order, the ids of students who like both basketball and badminton.

If there are none, output $0$.

Sample Input 1

5 6
2 9 7 8 3
1 2 3 4 5 6

Sample Output 1

2 3

Sample Input 2

3 7
1 2 3
4 5 6 7 8 9 10

Sample Output 2

0