?? ?????? ???????????????
????:1?????:??sn
2??????????
3????????
4???????
5???????95????
?2????????????????6???????????????????? (? ??)?????????6??,?????????????????2??????????5???,?????????
??????,????????????????,?????????,?????????????,??????????
???,?????????,??,?,?????????????????,???????????????
????????????,??????,????????,?????,????????6000?????????????(????????????????????????) ???:???