#include<iostream>
#include<stdio.h>

using namespace std;

double mul(double x1, double y1, double x2, double y2)
{
	return x1*x2+y1*y2;
}

int main(void)
{
	double x1,x2,y1,y2,xq,yq;
	while(scanf("%lf,%lf,%lf,%lf,%lf,%lf",&x1,&y1,&x2,&y2,&xq,&yq)!=EOF){
		double sx,sy;
		double t;
		double rx,ry;
		t=mul(xq-x1,yq-y1,x2-x1,y2-y1)/mul(x2-x1,y2-y1,x2-x1,y2-y1);
		sx=t*(x2-x1)+x1;
		sy=t*(y2-y1)+y1;
		rx=2*sx-xq;
		ry=2*sy-yq;
		printf("%.6lf %.6lf\n",rx,ry);
	}
	return 0;
}