#include<iostream>
#include<string.h>
#include<cstdio>
#include<algorithm>
#include<stack>
#include<queue>
#include<vector>
#include<cmath>
#include<utility>
#define ll long long int
#define ld long double
#define INF 1000000000
#define EPS 0.0000000001
#define rep(i,n) for(i=0;i<n;i++)
using namespace std;
typedef pair<int, int> P;

string str;

int main()
{
  double x1,y1,x2,y2,xq,yq;

  while(scanf("%lf,%lf,%lf,%lf,%lf,%lf",&x1,&y1,&x2,&y2,&xq,&yq)!=EOF){

    double ux=x2-x1;
    double uy=y2-y1;
    double vx=xq-x1;
    double vy=yq-y1;
    double v=sqrt(vx*vx+vy*vy);
    double u=sqrt(ux*ux+uy*uy);
    double len=(ux*vx+uy*vy)/u;

    // printf("\nux=%f,uy=%f\nvx=%f,vy=%f\n",ux,uy,vx,vy);
    // printf("len=%f\n",len);

    double x=x1+ux*len/u;
    double y=y1+uy*len/u;
    //printf("x=%f,y=%f\n",x,y);

    printf("%f %f\n",2*x-xq,2*y-yq);

  }
}