import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
double a,b,c,d,e,f,D,x,y,x1,x2,x3,x4,y1,y2,y3,y4;
x1=sc.nextDouble();
y1=sc.nextDouble();
x2=sc.nextDouble();
y2=sc.nextDouble();
x3=sc.nextDouble();
y3=sc.nextDouble();
x4=sc.nextDouble();
y4=sc.nextDouble();
a=y1-y2;
b=(-1)*(x1-x2);
e=(y1-y2)*x1-(x1-x2)*y1;
c=y3-y4;
d=(-1)*(x3-x4);
f=(y3-y4)*x3-(x3-x4)*y3;
D=a*d-b*c;
if(a/b==c/d) {
System.out.println("parallel");
}
else {
x=(e*d-b*f)/D;
y=(a*f-e*c)/D;
x=(double)((int)(x*10)/10);
y=(double)((int)(y*10)/10);
System.out.printf("%.1f %.1f",x,y);
}
}
}
