genzo2106

solution:公仔箱論壇* O8 `4 t, t6 ]5 L1 ]. n

0 T/ S0 ?7 J! D6 Q" @tvb now,tvbnow,bttvb1st and 2nd lady go over: 2 mins taken; w/ s" }' t1 |+ B# F9 t6 V  n
1st lady walk back: 1 mins taken
# b& n0 S/ b  v2 a, x8 Rtvb now,tvbnow,bttvb3rd and 4th lady go over: 10 mins taken公仔箱論壇& C( e6 L% `2 l; d) {1 r
2nd lady walk back: 2 mins taken
' N  Z( F8 Y9 p% j$ E; ltvb now,tvbnow,bttvb1st and 2nd lady walk back: 2 mins taken
# H1 T. h- i: X8 ]. a1 ^公仔箱論壇5.39.217.77; y* k% ?' x3 ^. |& e
In total : 17 mins taken!!! Solved!!