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Nov 10th, 2014
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  1. var set = new HashSet<string>();
  2.  
  3. Enumerable.Range(0, int.Parse(Console.ReadLine())).Select(t => Console.ReadLine()).ToList().ForEach(line =>
  4. {
  5. line.Select(t => t.ToString()).Aggregate((a, b) =>
  6. {
  7. var join = string.Join(String.Empty, a, b);
  8.  
  9. set.Add(a);
  10. set.Add(join);
  11.  
  12. return join;
  13. });
  14. });
  15.  
  16. Console.WriteLine(set.Count);
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