xa=int(input())
ya=int(input())
xb=int(input())
yb=int(input())

if ya==yb:
  x=50
  y=(x-xa)*(yb-ya)/(xb-xa)+ya
  x1=-50
  y1=(x1-xa)*(yb-ya)/(xb-xa)+ya
else:
  y=50
  x=(y-ya)*(xb-xa)/(yb-ya)+xa
  y1=-50
  x1=(y1-ya)*(xb-xa)/(yb-ya)+xa
  if (x<-50 or x>50) and (x1<-50 or x1>50):
    x=50
    y=(x-xa)*(yb-ya)/(xb-xa)+ya
    x1=-50
    y1=(x1-xa)*(yb-ya)/(xb-xa)+ya
  elif (x<-50 or x>50) and (x1>=-50 or x1<=50):
    x=50
    y=(x-xa)*(yb-ya)/(xb-xa)+ya
    if y<-50 or y>50:
      x=-50
      y=(x-xa)*(yb-ya)/(xb-xa)+ya
  elif (x1<-50 or x1>50) and (x>=-50 or x<=50):
    x1=50
    y1=(x1-xa)*(yb-ya)/(xb-xa)+ya
    if y1<-50 or y1>50:
      x1=-50
      y1=(x1-xa)*(yb-ya)/(xb-xa)+ya
print(x,y,x1,y1)

if (y==y1) or (x==x1):
  if y==y1:
    s=(50-y)*100
  else:
    s=(50-x)*100
elif ((y==50 and y1!=-50) or (y==-50 and y1!=50)) or ((y1==50 and y!=-50) or (y1==-50 and y!=50)):
  s=abs(x-x1)*abs(y-y1)*0.5
else:
  if (y==50 and y1==-50) or (y==-50 and y1==50):
    s=(abs(50-x)+abs(50-x1))*0.5*100
  else:
    s=(abs(50-y)+abs(50-y1))*0.5*100
print(min(100*100-s,s))