?? ?????? ???? ??????????????????
????:1?????:600??????
2???????
3??????
4???????????
5????????????
?????????????6????????????16?????????18????????,???????????????
????,6??????????????16????????,?,??????????????,???,???,????????????????
??????????,??????,?10 ??????????????,???????????????,??????????10??????????
??????????,????????,????????????????,??
???,????,2????????,?????,???
?6??????????18?,????,?????????,??????????(????????????? ?????????? ??????????????????? ???????????? ??????????)
?????:?????