Unhandled Exception: System.FormatException: Input string was not in a correct format.
   at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal)
   at System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info)
   at System.Convert.ToInt32(String value)
   at wr222ae_examination_1.Program.<>c.<Main>b__0_0(String n) in /home/vinces/1dv024/wr222ae-examination-1/Program.cs:line 13
   at System.Linq.Enumerable.SelectArrayIterator`2.ToArray()
   at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
   at wr222ae_examination_1.Program.Main(String[] args) in /home/vinces/1dv024/wr222ae-examination-1/Program.cs:line 13