Allocate graph: V=2500000 E=20000000 flag = 1
Total time: 13.70  Section time: 13.70  (Reading graph from file)
Generated graph: G->V = 2500000  G->E = 4658501
Total time: 13.72  Section time: 0.02  (Making adjacency lists for the graph)
Running Kruskal... 
Total time: 21.01  Section time: 7.29  (First Kruskal)
Total time: 21.02  Section time: 0.01  (Resetting tree struct)
Total time: 28.04  Section time: 7.02  (Second Kruskal)
Nodes: 2500000  Edges: 2494916
MST weight = 509366122594.000000
Total time: 28.07  Section time: 0.03  (Printing tree)