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

int main(){
	float x1, y1, x2, y2, xp, yp;
	double x0, y0, x, y, _x, _y, a, b;
	while(scanf("%f,%f,%f,%f,%f,%f", &x1, &y1, &x2, &y2, &xp, &yp) != EOF){
		double angle = atan2(y2 - y1, x2 - x1);
		
		if(angle > M_PI/2) angle -= M_PI;
		if(angle < -M_PI/2) angle += M_PI;
		
		x0 = (y1 == y2 ? 0 : x1 - y1 * (x2-x1) / (y2-y1));
		y0 = (x0 != 0 || x1 == x2 ? 0 : y1 - x1 * (y2-y1) / (x2-x1));
		
		x = xp - x0;
		y = yp - y0;
		
		a = cos(angle) * cos(angle) - sin(angle) * sin(angle);
		b = 2 * sin(angle) * cos(angle);
		
		_x = a * x + b * y + x0;
		_y = b * x - a * y + y0;
		
		cout << fixed <<  setprecision(6) << _x << " " << _y << endl;
	}
	return 0;
}