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import java.io.IOException ;
import java.io.FileReader ;
import java.io.BufferedReader ;
import java.lang.StringBuilder ;
 
class Main
  {
  private static String getText (String filename) throws IOException
    {
    StringBuilder sb = new StringBuilder () ;
    FileReader fr = new FileReader (filename) ;
    BufferedReader br = new BufferedReader (fr) ;
    while (true)
      {
      String line = br .readLine () ;
      if (line==null) break ;
      sb .append (line) .append ('\n') ;
      }
    br .close () ;
    fr .close () ;
    }
 
  public static void main (String [] args) throws IOException
    {
    String text = getText ("/dev/tty") ;
    int chars = new TextCharsStat () .getStat (text) ;
    int words = new TextWordsStat () .getStat (text) ;
    int lines = new TextLinesStat () .getStat (text) ;
 
    System.out .printf ("文字数: %d%n", chars) ;
    System.out .printf ("単語数: %d%n", words) ;
    System.out .printf ("行数: %d%n", lines) ;
    }
  }
 
abstract class TextStat
  {abstract int getStat (String text) ;}
 
class TextCharsStat extends TextStat
  {
  int getStat (String text)
    {return text .replaceAll ("\\s+", "") .length () ;}
  }
 
class TextWordsStat extends TextStat
  {
  int getStat (String text)
    {return text .split ("\\W+").length ;}
  }
 
class TextLinesStat extends TextStat
  {
  int getStat (String text)
    {return text .split ("\n").length ;}
  }

/home/IwrRC7/prog.fs(6,1): error FS0010: Unexpected keyword 'class' in implementation file

/home/IwrRC7/prog.fs(16,23): warning FS0046: The identifier 'break' is reserved for future use by F#

/home/IwrRC7/prog.fs(37,3): warning FS0058: Possible incorrect indentation: this token is offside of context started at position (36:10). Try indenting this token further or using standard formatting conventions.

/home/IwrRC7/prog.fs(39,1): warning FS0058: Possible incorrect indentation: this token is offside of context started at position (36:10). Try indenting this token further or using standard formatting conventions.

Standard output is empty