program main
    implicit none
    integer x
    read(*,*) x
    if(x <= 599) then
        write(*,*) 8
    else if(x <= 799) then
        write(*,*) 7
    else if(x <= 999) then
        write(*,*) 6
    else if(x <= 1199) then
        write(*,*) 5
    else if(x <= 1399) then
        write(*,*) 4
    else if(x <= 1599) then
        write(*,*) 3
    else if(x <= 1799) then
        write(*,*) 2
    else if(x <= 1999) then
        write(*,*) 1
    end if
end program
