?? ???????????????? ??????????
????:1???????????:??????
2??????v
3????????????
4????????
5???????????
?11?22???????? (??????? ???????? ?)11??22?????,???????????:????????????????,????11?????????24?????????29????????????????????????????
22??????????????????,????
???????????????:????????????,???????????50??,?????????????????????????????,?????????????????,?,??????????????,????????,????,???????????(??????????)
????:???