??赺?????????????????

??????????+1 ????1?θ?????????????????????????20%

2??????????+2 ????2?θ?????????????????????????40%

3????????? ??η????????????????????????????????30%

4????????+10% ???????????10%

5????????+20% ???????????20%

6????????+30% ???????????30%

7????????+40% ???????????40%

8????????+50% ???????????50%