// 2014/09/24 Tazoe

#include <iostream>
#include <string>
#include <sstream>
using namespace std;

int main()
{
	while(true){
		string s;
		cin >> s;

		if(cin.eof())
			break;

		for(int i=0; i<s.size(); i++){
			if(s[i]==','){
				s[i] = ' ';
			}
		}

		istringstream is(s);
		double x1, y1, x2, y2, xq, yq;
		is >> x1 >> y1 >> x2 >> y2 >> xq >> yq;

//		cout << x1 << ' ' << y1 << ' ' << x2 << ' ' << y2 << ' ' << xq << ' ' << yq << endl;

		double a = y2-y1;
		double b = x1-x2;
		double c = x2*y1-x1*y2;

		double abc = a*xq+b*yq+c;
		double a2b2 = a*a+b*b;

		double xr = xq-(2.0*a*abc/a2b2);
		double yr = yq-(2.0*b*abc/a2b2);

		cout.precision(6);
		cout << fixed << xr << ' ' << fixed << yr << endl;
	}

	return 0;
}