public static void main(String[] args) throws IOException{
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String l1[] = br.readLine().split(" ");
        String l2[] = br.readLine().split(" ");
        int p1[] = new int[4];
        int p2[] = new int[4];
        for (int i=0; i<4; i++) {
            p1[i] = Integer.parseInt(l1[i]);
            p2[i] = Integer.parseInt(l2[i]);
        }
        double xpoi = 0;
        double ypoi = 0;
        boolean ver1 = false;
        boolean ver2 = false;
        int slope1 = 0;
        int yint1 = 0;
        int slope2 = 0;
        int yint2 = 0;
        if (p1[2]-p1[0]!=0) {
            slope1 = (p1[3]-p1[1])/(p1[2]-p1[0]);
            yint1 = p1[1]-slope1*p1[0];
        } else {
            ver1 = true;
        }
        if (p2[2]-p2[0]!=0) {
            slope2 = (p2[3]-p2[1])/(p2[2]-p2[0]);
            yint2 = p2[1]-slope2*p2[0];
        } else {
            ver2 = true;
        }
        if (ver1 && ver2) {
            if (p2[0]==p1[0]){
                System.out.println("coincident");
            } else {
                System.out.println("parallel");
            }
        } else if (ver1 || ver2) {
            if (ver1) {
                xpoi = p1[0];
                ypoi = slope2*p1[0]+yint2;
            } else if (ver2) {
                xpoi = p2[0];
                ypoi = slope1*p2[0]+yint1;
            }
            System.out.println(String.format("%.6f", xpoi)+" "+String.format("%.6f", ypoi));
        } else {
            xpoi = (yint1-yint2)/(slope2-slope1);
            ypoi = slope1*xpoi+yint1;
            System.out.println(String.format("%.6f", xpoi)+" "+String.format("%.6f", ypoi));
        }
    }