#include <stdio.h>
#define O 1000
#define E(a,b,X)if(a==b){X}else
#define u int
#define C(x,y)I+=++m[x][y]==2;
#define P(a,b)a<b?1:-1
#define L(s,e)u S=P(s,e);for(u c=s;c!=e;c+=S)
                            u
                           main
                         (void){u
                       m[O][O]={0},
                         x,X,y,Y,
                        I=0;while(
                      fscanf( stdin,
                    "%i,%i -> %i,%i",&
                  x,&y,&X,&Y)==4){E(x,X,L
                     (y,Y)C(x,c)C(x,Y)
                    )E(y,Y,L(x,X)C(c,y)C
                  (X,y)){u h=x,v=y,H=P(x,X
               ),V=P(y,Y);for(;h!=X&&v!=Y;h+=
                           H,v+=V
                           )C(h,v
                           )C(h,v
                         )}}printf(
                     "Answer: %d\n",I);}