text: #pragma once
  /* Some utility methods like Manhattan Distance and to ask
  if position a is closer to position c then position b.
  */
  #include "definitions.h"
  
  int ManhattanDistance(const Posb& a, const Posb& b);
  
  bool AisclosertoCthenB(const Posb& a, const Posb& b, const Posb& c);
  