#include<iostream>
#include<stdio.h>
#include<math.h>
#include<vector>
using namespace std;

#define EPS (1e-10)

class Point {
public:
    double x, y;
    Point(double x = 0, double y = 0): x(x), y(y) {}
    
    Point operator + (Point p) {return Point(x + p.x, y + p.y);}
    Point operator - (Point p) {return Point(x - p.x, y - p.y);}
    Point operator * (double a) {return Point(x * a, y * a);}
    Point operator / (double a) {return Point(x / a, y / a);}

    
    double norm(){return x*x + y*y;}
    double abs() {return sqrt(norm());}

    bool operator < (const Point &p) const {
        return x != p.x ? x<p.x : y<p.y;
    }
    bool operator == (const Point &p) const {
        return fabs(x-p.x) < EPS && fabs(y-p.y) < EPS;
    }
};

typedef Point Vector;

double dot(Vector a, Vector b){
    return a.x*b.x + a.y*b.y;
}

struct Segment {
    Point p1, p2;
};

Point project(Segment s, Point p){
    Vector base = s.p2 - s.p1;
    double r = dot(p-s.p1, base) / norm(base);
    return s.p1 + base * r;
}

Point reflect(Segment s, Point p) {
    return p + (project(s,p) - p) * 2.0;
}
int main(){
    double x1,y1,x2,y2,xq,yq;
    char c;
    while(cin>>x1>>c>>y1>>c>>x2>>c>>y2>>c>>xq>>c>>yq){
        Point P1(x1,y1);
        Point P2(x2,y2);
        Point q(xq,yq);
        Segment s;
        s.p1=P1,s.p2=P2;
        Point p=project(s,q);
        cout<<p.x<<" "<<p.y<<endl;
    }
}