24:00
0
xn x
24:00 
11:00
0
11:00
0
01:17:00
0
12:00
0
10:00
0
13:00
0
18:00
0
10:00
0
02:00
0
50:00
0
10:00
0
29:00
0
11:00
0
11:00
0
13:00
0
11:00
0
10:00
0
14:00
0
05:00
0