program tag
  implicit none
  integer(8) :: a, b, v, w, t, i, j, d, dt

  read(*,*) a, v
  read(*,*) b, w
  read(*,*) t

  if (v <= w) then
     write(*,*) 'NO'
     stop
  end if
  dt = abs(a-b)

  if (mod(dt,(v-w))==0 .and. dt/(v-w)<=t) then
     write(*,*) 'YES'
     stop
  end if
  write(*,*) 'NO'


  stop
end program tag
  
