/* Wrap a stream of characters into even lines.
 * Ignore newlines in the input.
 */

/* Copyright (c) 1999 Blossom Associates West */
/* All rights reserved.                       */

#include <stdio.h>

enum {
  DFLTN = 50 /* default output line length */
};

int main( int argc, char* argv[] ) {

  int c;
  int p = 0;
  int n = DFLTN;
  int start_nocount = '<'; /* To count everything set this to -1. */
  int end_nocount = '>';
  int counting = 1;

  while ( EOF != ( c = getchar() ) ) {
    if ( isprint( c ) ) {
      putchar( c );
      if ( start_nocount == c ) {
        counting = 0;
      }
      if ( counting ) {
        p++;
      }
      p %= n;
      if ( 0 == p && counting ) {
        putchar( '\n' );
      }
      if ( end_nocount == c ) {
        counting = 1;
      }
    }
  }
  if ( 0 != p ) putchar( '\n' );

}