?????????????????????????????????????????????????????????????????? ???????????????????????????????????????????
??????????????1????????? ????????????????????????????????????????????????????????????????????????????
1??????????????????
A?????B?????C??????D??????E?????
2???????????????????????
A?????B?????C??????D??????E?????
3????????????????????
A?????B?????C??????D??????E?????
4????????????????
A????<30??B????1???C???2???D????3???E???>3???
5????????????
A????B???C?????D???E?????
6??????????????
A?????B????C???D???E?????
7??????????????
A?????B????C???D???E?????
8?????????????
A?????B?????C??????D??????E?????
9???????????????????
A???B??C???D???E????
10????????????????????????
A?????B?????C???D?????E?????
???????10????5??????A?1???B?2???C?3???D?4???E?5???
?????14??18??
?????10??13??
?????5??9??
18??????