/in/foo.cc: In function 'int triangleRelation(const Triangle&, const Triangle&)':
/in/foo.cc:90:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^
/in/foo.cc: In function 'int intersections(const Vector2&, const Vector2&, const Vector2&, const Vector2&)':
/in/foo.cc:75:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^