output_description: Print a string as stated in Problem Statement.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      K
      S
attempt: a = int(input());s = input()
  print(s[:a] + "..." * (len(s) - 1 > a))
problem_description: Statement
  
  We have a string S consisting of lowercase English letters.
  
  If the length of S is at most K, print S without change.
  
  If the length of S exceeds K, extract the first K characters in S, append
  `...` to the end of them, and print the result.
samples: [{"input": "7\n    nikoandsolstice", "output": "nikoand...\n    \n\n`nikoandsolstice` has a length of 15, which exceeds K=7.\n\nWe should extract the first 7 characters in this string, append `...` to the\nend of them, and print the result `nikoand...`.\n\n* * *"}, {"input": "40\n    ferelibenterhominesidquodvoluntcredunt", "output": "ferelibenterhominesidquodvoluntcredunt\n    \n\nThe famous quote from Gaius Julius Caesar."}]