#include <cstdio>
using namespace std;

#define sqr(x) ((x) * (x))

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

	while(scanf("%lf,%lf,%lf,%lf,%lf,%lf", &x1, &y1, &x2, &y2, &xq, &yq) != EOF) {
		double x, y;
		double tmp_x, tmp_y;

		tmp_x = x1 - x2;
		tmp_y = y1 - y2;

		x = (2 * tmp_x * tmp_y * (yq - y1) - sqr(tmp_y) * (xq - 2 * x1) + sqr(tmp_x) * xq)
			/ (sqr(tmp_x) + sqr(tmp_y));
		y = (2 * tmp_x * tmp_y * (xq - x1) - sqr(tmp_x) * (yq - 2 * y1) + sqr(tmp_y) * yq)
			/ (sqr(tmp_x) + sqr(tmp_y));

		printf("%f %f\n", x, y);
	}

	return 0;
}