<br />
<b>Warning</b>:  session_start(): open(/var/lib/php/sessions/sess_tqsn7irc4dptuuv4570hg9b2ig, O_RDWR) failed: No space left on device (28) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
<br />
<b>Warning</b>:  session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
sclass ParsedPowerWords {
  sclass Equation {
    S lhs, rhs;
    bool bothSided;
    
    *() {}
    *(S *lhs, S *rhs, bool *bothSided) {}
    
    toString { ret curlyIfContains("->", lhs) + (bothSided ? " <-> " : " -> ") + curlyIfContains("->", rhs); }
  }
  
  new L<Equation> equations;
  new LPairS inequalities;
  
  toString {
    ret lines(concatLists(equations, (L) ll(""), map renderInequality(inequalities)));
  }
}