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

using namespace std;

void solve()
{
	double x1, y1, x2, y2, x3, y3;
	while(~scanf("%lf,%lf,%lf,%lf,%lf,%lf", &x1, &y1, &x2, &y2, &x3, &y3))
	{
		if(fabs(y2 - y1) < 1e-5)
		{
			printf("%.6f %.6f\n", x3, 2 * y1 -y3);
		}
		else if(fabs(x2 - x1) < 1e-5)
		{
			printf("%.6f %.6f\n", 2 * x1 - x3, y3);
		}
		else
		{
			double b1 = y1 - ((y2 - y1) / (x2 - x1)) * x1;
			double b2 = y3 + ((x2 - x1) / (y2 - y1)) * x3;
			double x_inter = (b2 - b1) / ((y2 - y1) / (x2 - x1) + (x2 - x1) / (y2 - y1));
			double y_inter = ((y2 - y1) / (x2 - x1)) * x_inter + b1;
			printf("%.6f %.6f\n", x_inter + x_inter - x3, y_inter + y_inter - y3);
		}
	}
}

int main()
{
	solve();
	return(0);
}