output_description: Replace every character in S with `x` and print the result.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      S
attempt: S = input()
  char_list = list(S)
  new_list = []
  for char in char_list:
      char = "x"
      new_list.append(char)
  output = "".join(new_list)
  print(output)
  
problem_description: Statement
  
  Given is a string S. Replace every character in S with `x` and print the
  result.
samples: [{"input": "sardine", "output": "xxxxxxx\n    \n\nReplacing every character in S with `x` results in `xxxxxxx`.\n\n* * *"}, {"input": "xxxx", "output": "xxxx\n    \n\n* * *"}, {"input": "gone", "output": "xxxx"}]