using System;

using System.Collections.Generic;                   

using System.Linq;

public class Program

{

    public static void Main()

    {

        List<int> mass1 = new List<int> { 1,3,7,5,9,4,9,0};

        List<int> mass2 = new List<int> { 2,7,13,14,0,5};

        foreach (var c in mass1.Intersect(mass2))

            Console.WriteLine(c);

    }

}