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);