#include<cstdio>
#include<cmath>
using namespace std;
int main(){
	double a[2],b[2],c[2],angle,dy,r[2];
	for(;;){
		if(scanf("%lf,%lf,%lf,%lf,%lf,%lf",&a[0],&a[1],&b[0],&b[1],&c[0],&c[1]) == EOF){break;}
		if(a[0] == b[0]){r[0] = 2*a[0]-c[0];r[1] = c[1];}
		else{
			angle = (a[1]-b[1])/(a[0]-b[0]);
			dy = a[1]-angle*a[0];
			a[1]-=dy;
			b[1]-=dy;
			c[1]-=dy;
			r[0] = c[0]*(1-angle*angle)/(angle*angle+1)+c[1]*(2*angle)/(angle*angle+1);
			r[1] = c[1]*(angle*angle-1)/(angle*angle+1)+c[0]*(2*angle)/(angle*angle+1);
			r[1]+=dy;
		}
		printf("%.6lf %.6lf\n",r[0],r[1]);
	}
	return 0;
}