program tag
  implicit none
  integer(8) :: a, b, v, w, t, i, j, a1, b1

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

  do i = 1, t
     a1 = a + i*v
     if (mod(a1-b,w) == 0 .and.mod((a1-b)/w,2)==mod(i,2) .and. abs((a1-b)/w)<=t ) then
        write(*,*) 'YES'
        stop
     end if
  end do
  
  write(*,*) 'NO'
  stop
end program tag
  
