using System;

using System.Linq;

public class Program

{

    public static decimal? Min(params decimal?[] vals)

    {

        return vals.Where(x => x.HasValue).OrderBy(x => x).FirstOrDefault();

    }

    /*public static decimal? Min(decimal? val1, decimal? val2)

    {

        return Nullable.Compare(val1, val2) < 0 ?

                val1 ?? val2:

                val2 ?? val1;

    }*/

    public static void Main()

    {

        Console.WriteLine("Min value: " + Min(-25, -50));

        Console.WriteLine("Min value: " + Min(-50, -25));

        Console.WriteLine("Min value: " + Min(null, -50));

        Console.WriteLine("Min value: " + Min(-25, null));

        Console.WriteLine("Min value: " + Min(null, null));

    }

}