View difference between Paste ID: 5w4caRd7 and bNWP7RnQ

 using System;
 using System.Numerics;
 
 namespace ConsoleInputOutput
 {
     public static class Fibonachi
     {
         public static void Main()
         {
-            ulong first = 0;
+
-            ulong second = 1;
+	    if(n==1) Console.WriteLine(0);
             else
             {
-            ulong third = ulong.MinValue;
+            BigInteger first = 0;
             BigInteger second = 1;
             Console.WriteLine(first);
             Console.WriteLine(second);
             BigInteger third = 0;
             for (int i = 2; i < n; i++)
             {
                 third = first + second;
                 Console.Write(third + " ");
                 first = second;
                 second = third;
             }
             }
         }
     }
 }