solution: 2 ]; q$ ?) i4 B0 b; n9 j% \公仔箱論壇: v$ ~$ t2 Q5 ?
1st and 2nd lady go over: 2 mins taken : K" w; o6 F! H0 [, E1st lady walk back: 1 mins taken& ^7 K9 k7 Y7 a, m2 u% `
3rd and 4th lady go over: 10 mins taken) g3 ?, e: k- k2 p
2nd lady walk back: 2 mins taken $ b8 v2 r. B+ i* I& q: ~3 dtvb now,tvbnow,bttvb1st and 2nd lady walk back: 2 mins taken # s/ j C3 c( m& `公仔箱論壇 / k \7 [# l7 \1 A* pIn total : 17 mins taken!!! Solved!!作者: kffccc 時間: 2009-6-4 11:28 PM