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  1. using System;
  2. using System.Text.RegularExpressions;
  3.  
  4. public class Test
  5. {
  6.   public static void Main()
  7.   {
  8.   	try
  9.   	{
  10.   	  while (true)
  11.         Console.WriteLine(Regex.Replace(Console.ReadLine(), "^(?=.{5})([^ ]*)|.*", "$1"));
  12.   	}
  13.   	catch (ArgumentNullException)
  14.   	{
  15.   	}
  16.   }
  17. }
Success #stdin #stdout 0.04s 134592KB
comments (?)
stdin
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1
12
1 2
1 2 3
12 3
12345
1 2 3 4 5
12 34 56
123 456
1234 56
12345 6
123456
123456 789
stdout
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1

12345
1
12
123
1234
12345
123456
123456
https://ideone.com/TcBhzA
language:
C# (gmcs 5.20.1)
created:
5 years ago
visibility:
public

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