The Problem

Given an arbitrary, syntactically correct, Pascal source program in the file PROB2.IN you are to compress it according to the following guidelines, applied in the order listed:

• Replace all sequences of blanks, except those within a string constant, with a single blank. Recall that string constants are delimited by single quotes ('), a string constant must contain at least one character, and that two consecutive single quotes ('') represent the single quote character.

  e.g.,

  the following are string constants
  'this is a string constant'
  'don''t you see the fun here?'
• eliminate all comments - comments start with (* and are terminated with *) or they start with { and are terminated with }. Remove the entire comment including the end markers (i.e., (*, *), { and }).

  e.g.,

  the following are comments:
  (* here is a great comment *)
  { and here is a somewhat
  longer one }
• eliminate any totally blank lines (i.e., any lines, after removing any comments, which consist only of blanks and end-of-line characters - if when printed, or displayed, a blank line would occur, it should be eliminated.) You can assume there will be no tabs or other unusual non-printing characters within the input.

Compress the input file into the output file PROB2.OUT using the rules above. The results should result in a syntactically valid Pascal program; albeit it in a somewhat less stylish form.

Example

Input

Program Test (input, output);
{ this is a great program }

Var               X, Y        :         integer      ;

  begin
	readln (X, Y);
	   writeln (X,   '  This is Y   ',    Y,     "Hi!')   ;
  end.

Output

Program Test (input, output);
Var X, Y : integer ;
 begin
 readln (X, Y);
 writeln (X, '  This is Y   ', Y, "Hi!') ;
 end.