10 --> 2
21 --> 1 3 4
32 --> 1 3 4
43 --> 1 4
54 --> 0 1
60 --> 2
71 --> 1 3 4
82 --> 1 3 4
93 --> 1 4
104 --> 0 1
11distances: 0 2 1 2 2
12parent[0] = 0
13parent[1] = 2
14parent[2] = 0
15parent[3] = 2
16parent[4] = 2
17