12 times
. k6 J6 w' i4 h3 R# L5.39.217.76
! Z! u6 `$ a Y' beach time 4 person but 1 need to back to pick up the other 3
4 h2 ]4 A- L4 |4 |return x 10 = 30 people9 l* K, C9 _4 X/ {. {; v5 X& b
1 time return5.39.217.76( C1 r' w8 [: w% T2 C( ?' P& g
2 person on last time
% i. a O* ?, F, d1 P5.39.217.76total : 12 times |