program yukicoder_2535
  use, intrinsic :: iso_fortran_env
  implicit none
  integer(int32) :: n
  logical :: b
  character(len=3) :: p_str
  integer(int32) :: i
  read(input_unit, *) n
  b = .true.
  do i = 1, n
     read(input_unit, *) p_str
     select case(trim(p_str))
     case("Yes")
        b = b .eqv. .true.
     case("No")
        b = b .eqv. .false.
     end select
     write(output_unit, '(a)') trim(merge("Yes", "No ", b))
  end do
end program yukicoder_2535