{$apptype console}
const eps = 0.0000000000001;

type point = record
   x,y:real;
   end;


var a1,a2,b1,b2,c:point;
     d,da,db:real;
var
 x1,y1,x2,y2: real;
ta,tb: real;
checkIntersection:integer;



begin
   readln(a1.x, a1.y, a2.x, a2.y);
   readln(b1.x, b1.y, b2.x, b2.y);
   d :=(a1.x-a2.x)*(b2.y-b1.y) - (a1.y-a2.y)*(b2.x-b1.x);
   da:=(a1.x-b1.x)*(b2.y-b1.y) - (a1.y-b1.y)*(b2.x-b1.x);
   db:=(a1.x-a2.x)*(a1.y-b1.y) - (a1.y-a2.y)*(a1.x-b1.x);
   if (abs(d)<eps) then
     checkIntersection := 0
   else
     begin
     ta:=da/d;
     tb:=db/d;
     if    (0<=ta) and (ta<=1)
       and (0<=tb) and (tb<=1)
         then
           begin
           c.x:=a1.x+ta*(a2.x-a1.x);
           c.y:=a1.y+ta*(a2.y-a1.y);
           checkIntersection := 1
           end
         else checkIntersection := -1;
     end;


if checkIntersection=-1 then writeln('No');
if checkIntersection=1 then writeln('Yes');
if checkIntersection=0 then
begin
if ((a1.x-b1.x)*(b2.y-b1.y)=(a1.y-b1.y)*(b2.x-b1.x)) or
((a2.x-b1.x)*(b2.y-b1.y)=(a2.y-b1.y)*(b2.x-b1.x)) or
((b1.x-a1.x)*(a2.y-a1.y)=(b1.y-a1.y)*(a2.x-a1.x)) or
((b2.x-a1.x)*(a2.y-a1.y)=(b2.y-a1.y)*(a2.x-a1.x))
   then writeln('Yes') else writeln('No');
end;
// write(c.x:0:3, ',',c.y:0:3);   readln;
end.