using System;
using System.Collections.Generic;
using System.Linq;
public class Program
{
public static void Main()
int[] a = new int[6] { 2, 5, 6, 9, 17, 12 };
int[] b = new int[5] { 3, 5, 7, 9, 12 };
Console.WriteLine("Wypisz wspólne elementy zbiorów 'a' i 'b'");
}