????

???


??????????]???????N????
??:

1.

[?]?15??50?1?10?
[?]????????????
??????????
??1????????????
??????1??
???30???
[?]2?2?????????
?
[]????????
[]???????????
??????????????
????1???????
???????????
???????
???????????
?????????
??????

2.??

[?]?100??250?
[?]?????????
????????30?
???????????
????
[?]2??
[]??`???????????????
??
[]?????????
???????????????
??????????????
????????????
????????????
??????????????
??????

3.???

[?]15??50??50?15?
[?]??????????...