using System;

public class Program

{

    public static void Main()

    {

        int a = int.Parse(Console.ReadLine());

        int b = int.Parse(Console.ReadLine());

        int c = int.Parse(Console.ReadLine());

        int d = int.Parse(Console.ReadLine());

        int e = int.Parse(Console.ReadLine());

​

        int result = 1;

        while (true)

        {

            int counter = 0;

            if (result % a == 0)

            {

                counter++;

            }

            if (result % b == 0)

            {

                counter++;

            }

            if (result % c == 0)

            {

                counter++;

            }

            if (result % d == 0)

            {

                counter++;

            }

​

            if (result % e == 0)

            {

                counter++;

            }

​

            if (counter >= 3)

            {

                break;   

            }

​

            result++;

        }

        Console.WriteLine(result);

    }

}