?? ???????????????????????????200??

????:1????????:????????
2????????
3????????100?3??
4????????????
5???100????
??2???????????????????20??????????????(??? ?)2?????????????????????????20??,????????,??????????200??,????????????????,????????????

????????,?????,???????????????????????????????1????????????????,?????????????????????????,????????????,???????????????????????,????????????,??,????????????????????
??????????????????????,??,????????????????????????????????,??,????????????????????????????????????,?,?????????????????????????????????????????,??????????,???2?20????,?????????200?,????????????????????????,????????????????,???????????800???????????????????????,?????????????10?????????????????,??2???????????????15?????????
???????????????????,?????????????,???????????????????????????????????????,??????????????,???????????“???????????”?????????????,???????????????,??????????,??(???????)
