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??????????????????????á??????????????????????????????????????????????????????????????ɡ???????????????????70~90????????????(??????????????????????)???????????????????????????????????????????????3???

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0?? --- 1?? 4x1=4 ?? ??????+10?? ?????????

1?? --- 2?? 34x1=34 ?? ??????+13?? ?????????

2?? --- 3?? 34x2=68 ?? ??????+20?? ?????????

3?? --- 4?? 63x2=126 ?? ??????+23?? ?????????

4?? --- 5?? 70x3=210 ?? ??????+25?? ?????????

5?? --- 6?? 103x3=309 ?? ??????+29?? ?????????

6?? --- 7?? ????400??δ?????????