#include <map>
#include <set>
#include <list>
#include <cmath>
#include <queue>
#include <stack>
#include <cstdio>
#include <string>
#include <vector>
#include <complex>
#include <cstdlib>
#include <cstring>
#include <numeric>
#include <sstream>
#include <iostream>
#include <algorithm>
#include <functional>

#define mp       make_pair
#define pb       push_back
#define all(x)   (x).begin(),(x).end()
#define rep(i,n) for(int i=0;i<(n);i++)
#define repi(i,a,b) for(int i = (a); i < (b); i++)

using namespace std;

typedef    long long          ll;
typedef    unsigned long long ull;
typedef    vector<bool>       vb;
typedef    vector<int>        vi;
typedef    vector<vb>         vvb;
typedef    vector<vi>         vvi;
typedef    pair<int,int>      pii;

const int INF=1<<29;
const double EPS=1e-9;

const int dx[]={1,0,-1,0},dy[]={0,-1,0,1};

int main(){
	double x1,y1,x2,y2,xq,yq;
	double m,x,y,c;
	while(~scanf("%lf,%lf,%lf,%lf,%lf,%lf",&x1,&y1,&x2,&y2,&xq,&yq)){
		if(x2==x1){
			xq *=-1;
			printf("%.6f %.6f\n",xq,yq);
		}else{
			m = (y2-y1)/(x2-x1);
			c = y2-m*x2;
			x = (2*m*yq-xq*(m*m-1)-2*m*c)/(m*m+1);
			y = (2*m*xq+yq*(m*m-1)+2*c)/(m*m+1);
			printf("%.6f %.6f\n", x, y);
		}
	}
	return 0;
}