solution:
; w/ U( p W$ ^$ V7 b* N
# `# }9 E6 v8 }/ P# Y1st and 2nd lady go over: 2 mins taken
3 T: \# l1 D" P5 R5 `5 b5 F, \tvb now,tvbnow,bttvb1st lady walk back: 1 mins taken公仔箱論壇7 m+ K5 r p i; Z! m
3rd and 4th lady go over: 10 mins takentvb now,tvbnow,bttvb, q! T3 s' N& Y( j x. t4 M' u v
2nd lady walk back: 2 mins taken9 K/ I8 j+ g3 g2 I
1st and 2nd lady walk back: 2 mins taken
0 z" K2 n- U& {% ~! h3 U公仔箱論壇1 C, Z& a5 X. s; `$ I
In total : 17 mins taken!!! Solved!! |