12 times
/ v, v6 I$ o( l* d n1 e6 X! {; o! [8 s. U2 G1 E
each time 4 person but 1 need to back to pick up the other 3
& B* x; Y! z2 w4 ]5.39.217.76return x 10 = 30 peopletvb now,tvbnow,bttvb/ X+ R6 w0 @% e$ T: W2 {" f% q
1 time return
1 r# n) `; D$ m1 K5 F5.39.217.762 person on last time 2 m1 m/ b& X9 D* A
total : 12 times |