#include <iostream>

using namespace std;

int main()
{
	double x1, y1, x2, y2, xq, yq, a1, b1, a2, b2, cx, cy;
	
	while(scanf("%lf,%lf,%lf,%lf,%lf,%lf", &x1, &y1, &x2, &y2, &xq, &yq)!=EOF){
		if((y2-y1) == 0){
			a1 = xq;
			a2 = yq-y1;
			b1 = yq-2*a2;
		} else if((x2-x1) == 0){
			b1 = yq;
			a2 = xq-x1;
			a1 = xq-2*a2;
		} else{
			a1 = (y2-y1)/(x2-x1);
			a2 = -1/a1;
			b1 = y1-a1*x1;
			b2 = yq-a2*xq;
			cx = a1*(b2-b1)/(a1*a1+1);
			cy = a1*cx+b1;
			a1 = 2*cx-xq;
			b1 = 2*cy-yq;
		}
		printf("%.6f %.6f\n", a1, b1);
	}
	
	return 0;
}