using System;

public class Program

{

    public static void Main()

    {

        var inputValues = new[] { 3, 5, 7, 1, 3, 7, 9, 10, 12, 0, 3 };

        int? min = null;

        int? max = null;

        foreach(var v in inputValues)

        {

            min = min ?? v;

            max = max ?? v;

            if (v < min) min = v;

            if (v > max) max = v;

        }

        Console.WriteLine("Min: {0} Max: {1}", min, max);

    }

}