64seconds
- h" }- ]8 @* _0 k1 UTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。5.39.217.77:88986 M) S) D3 k" ?* O! y: H S1 X
1 to 4 have 3floors = 48 sec
; N: |" [$ `2 h6 l( h8 ^5.39.217.77:8898avg. 48/3 = 16sec5.39.217.77:88980 K- A" @0 ^: u+ H' S
8 u% Z% W& b. B3 ^9 J: D
4 to 8 have 4floors = 16x4
( e) s8 c- o% Y" k, g# j1 r= 64secs |