program jihanki
  implicit none
  integer :: d

  read(*,*)d
  if (d==25) then
     write(*,*)'Christmas'
  elseif (d==24) then
     write(*,*)'Christmas Eve'
  elseif (d==23) then
     write(*,*)'Christmas Eve Eve'
  else
     write(*,*)'Christmas Eve Eve Eve'
  end if
  
end program jihanki
