???????,???????????????,???????????1-10????
??????????????? ????1-10????????ο???
1??2???????20????????????
2??3???????48????????????
3??4???????95????????????
4??5???????450????????????
5??6???????830????????????
6??7???????1400????????????
7??8???????2500-2800????????????
8??9???????6300-6500????????????
9??10???????11000-12000????????????
????????????????????8???????????20%?????????????????????????8??????????????8??????????ο?