public class Program
{
    public static void Main()
    {
        int num = int.Parse(Console.ReadLine() ?? string.Empty);
        //string[] str = (Console.ReadLine() ?? string.Empty).Trim().Split(' ');
        //string str2 = Console.ReadLine() ?? string.Empty;

        if (num % 2 == 0 && num % 5 == 0)
        {
            Console.WriteLine(num);
            return;
        }

        for (int i = num - 100; i <= num + 100; i++)
        {
            if(i >= 0 && i <= 3 || i == 5 || i == 7)
            {
                continue;
            }
            if(i % 2 == 0 || i % 3 == 0 || i % 5 ==0)
            {
                Console.WriteLine(i);
                return;
            }
        }

    }
}