#include "bits/stdc++.h"

#define REP(i,num) for(int i=0;i<(num);++i)
#define ALL(c) c.begin(),c.end()
#define LOOP(i) while(i--)
#define PRINTALL(c) for(auto& x:c){cout<<x<<' ';}cout<<endl;
#define PAIRCOMP(c,comp) [](const pair<ll,ll>& lhs,const pair<ll,ll>& rhs){return lhs.c comp rhs.c;}

using namespace std;
using ll = long long;

constexpr ll atcoder_mod = 1e9+7;

template<typename T=int>
T in(){T x; cin >> x; return (x);}
template<typename T=int,typename C=vector<T>>
C vecin(int N){C x(N);REP(i,N){x[i]=in<T>();}return move(x);}

void vout(){cout << endl;}
template<typename Head,typename... Tail>
void vout(Head&& h,Tail&&... t){cout << ' ' << h;vout(forward<Tail>(t)...);}
void out(){cout << endl;}
template<typename Head,typename... Tail>
void out(Head&& h,Tail&&... t){cout << h;vout(forward<Tail>(t)...);}

vector<string> split_naive(const string &s, char delim) {
	vector<string> elems;
	string item;
	for(char ch:s){
		if(ch==delim){
			if(!item.empty()) elems.push_back(item);
			item.clear();
		}
		else{
			item += ch;
		}
	}
	if(!item.empty()) elems.push_back(item);
	return elems;
}

int main(){
	//cin.tie(0);
	//ios::sync_with_stdio(false);
	cout<<fixed<<setprecision(10);

	string S;
	while(cin>>S){
		auto T = split_naive(S,',');
		double x1,y1,x2,y2,xq,yq;
		sscanf(T[0].c_str(),"%lf",&x1);
		sscanf(T[1].c_str(),"%lf",&y1);
		sscanf(T[2].c_str(),"%lf",&x2);
		sscanf(T[3].c_str(),"%lf",&y2);
		sscanf(T[4].c_str(),"%lf",&xq);
		sscanf(T[5].c_str(),"%lf",&yq);
		
		double dx=x2-x1,dy=y2-y1;
		double nd = hypot(dx,dy);
		dx /= nd;
		dy /= nd;
		double qx=xq-x1,qy=yq-y1;
		double nh = qx*dx+qy*dy;
		double hx=nh*dx,hy=nh*dy;
		out(xq+2*(hx-qx),yq+2*(hy-qy));
	}

	return 0;
}
