#include<cstdio>
using namespace std;
int main(void)
{
	double xq,x1,x2,x,yq,y1,y2,y,a,b,a1,b1,a2,b2;
	while(scanf("%lf,%lf,%lf,%lf,%lf,%lf",&x1,&y1,&x2,&y2,&xq,&yq)!=EOF)	{
		if(x1==x2)	{
			y=yq;
			x=2.0*x1-xq;
		}
		else if(y1==y2)	{
			x=xq;
			y=2.0*y1-yq;
		}
		else {
			a=(y2-y1)/(x2-x1);
			b=y1-a*x1;
			a1=a;
			b1=a*xq+2.0*b-yq;
			a2=-1.0/a;
			b2=(xq+a*yq)/a;
			x=(b2-b1)/(a1-a2);
			y=a1*x+b1;
		}
		printf("%lf %lf\n",x,y);
	}
	return 0;
}
