1.1 --- a/lemon/elevator.h	Thu Apr 02 12:57:18 2015 +0200
     1.2 +++ b/lemon/elevator.h	Thu Apr 02 13:36:16 2015 +0200
     1.3 @@ -167,7 +167,7 @@
     1.4      ///Return the number of items on level \c l.
     1.5      int onLevel(int l) const
     1.6      {
     1.7 -      return _first[l+1]-_first[l];
     1.8 +      return static_cast<int>(_first[l+1]-_first[l]);
     1.9      }
    1.10      ///Return true if level \c l is empty.
    1.11      bool emptyLevel(int l) const
    1.12 @@ -177,12 +177,12 @@
    1.13      ///Return the number of items above level \c l.
    1.14      int aboveLevel(int l) const
    1.15      {
    1.16 -      return _first[_max_level+1]-_first[l+1];
    1.17 +      return static_cast<int>(_first[_max_level+1]-_first[l+1]);
    1.18      }
    1.19      ///Return the number of active items on level \c l.
    1.20      int activesOnLevel(int l) const
    1.21      {
    1.22 -      return _last_active[l]-_first[l]+1;
    1.23 +      return static_cast<int>(_last_active[l]-_first[l]+1);
    1.24      }
    1.25      ///Return true if there is no active item on level \c l.
    1.26      bool activeFree(int l) const