???????2??????750????????
?????????????????????????2016-08-18
???????2,???????2??????,?????750?????
3????120?????
???????5?Σ????50?Σ?3???60?????
????????????????????????????????PASS??
3????????????120+60=180????
????????100????3??300?????
???????=900*3+(40*2+10)*3=2970??
???????5????????=350??
2970+350=3320
???????????750??????????3320???ж???????1800??
???????2??????????? ????1-13???????????
???????:??????????????????40407?????????????40407???????????α? may
