#include <complex>
#include <cstdio>
#include <iomanip>
#include <iostream>
using namespace std;

typedef complex<double> xy_t;
double dot_product(xy_t a, xy_t b){ return (conj(a) * b).real(); }
double cross_product(xy_t a, xy_t b){ return (conj(a) * b).imag(); }
xy_t projection(xy_t p, xy_t b) {return b * dot_product(p,b) / norm(b);}

int main(){
    xy_t P1,Q,S,R;
    double x1,y1,x2,y2,xq,yq;
    while(~scanf("%lf,%lf,%lf,%lf,%lf,%lf", &x1, &y1, &x2, &y2, &xq, &yq)){
        P1 = xy_t(x1,y1);
        Q = xy_t(xq,yq);
        S = projection(Q - P1, xy_t(x2,y2) - P1) + P1;
        R = S+S-Q; // Q + 2*(S - Q)
        cout << fixed << setprecision(6) << real(R) << ' ' << imag(R) << endl;
    }
}