program abc19
 implicit none
 integer::X,s
 read(*,*)X
 if(X<=599)then
  s=8
 else if(X<=799)then
  s=7
 else if(X<=999)then
  s=6
 else if(X<=1199)then
  s=5
 else if(X<=1399)then
  s=4
 else if(X<=1599)then
  s=3
 else if(X<=1799)then
  s=2
 else
  s=1
 end if
 print'(i0)',s
end program abc19