难？香！

n, m = map(int, input().split())
td = list(map(int, input().split()))
sd = list(map(int, input().split()))

ba = [x for x in td if x in sd]
print(' '.join(map(str, ba)))

using System;
using System.Collections.Generic;
using System.Linq;

class Program
{
    static void Main(string[] args)
    {
        string[] nm = Console.ReadLine().Split(' ');
        int n = int.Parse(nm[0]);
        int m = int.Parse(nm[1]);

        int[] td = Array.ConvertAll(Console.ReadLine().Split(' '), int.Parse);
        int[] sd = Array.ConvertAll(Console.ReadLine().Split(' '), int.Parse);

        var ba = td.Where(x => sd.Contains(x)).OrderBy(x => Array.IndexOf(td, x));
        Console.WriteLine(string.Join(" ", ba));
    }
}