????:1?????200??500:?????????

2???????

3????????????

4???100???

5???????????

?2??????12?????????????? 2????12??????,???????

??,??????????50????????????????????????????????????,??????,?,?????,?,?,??????????????????????????????????????????,?????????????????????,?????????,?????????????????????????????,??????????????,?????????

????????????,??????50????????????,???????????,??????????????????????,??,?????????????????????,?????????????,????

????????(????????????????????) ?????????????:??????