Graph2
17
-1 5 3 2
-2 4 3
-3 6
-4 6 5
-5 6
-6 17 12 9 7
-7 15 11 10
-8 16 15 13 11
-9 16 13 10
-10 14
-11 12
-12 13
-14 16 15
0