??????2D??????????
?????????????????????????2018-11-06
??????2D??????????
???????????????????????????????????????°?!
?????????1-2????????????15????????????????
?????????2-3????????????30????????????????
?????????3-4????????????60????????????????
?????????4-5????????????120????????????????
?????????5-6????????????240????????????????
?????????6-7????????????480????????????????
?????????7-8????????????960????????????????
?????????8-9????????????1920????????????????
?????????9-10????????????3840????????????????
?????????10-11????????????7680????????????????
?????????11-12????????????15360????????????????
?????????12-13????????????30720????????????????
?????????13-14????????????61440????????????????
?????????14-15????????????122880????????????????
????????????????????????????????????????????
???????:??????????????????40407?????????????40407???????????α? ???
