original graph: 0 <--> 3 3 2 1 <--> 3 2 <--> 0 3 3 <--> 0 0 1 2 1(0,3) 2(0,3) 3(1,3) 4(2,0) 5(3,2) removing edges connecting 0 and 3 0 <--> 2 1 <--> 3 2 <--> 0 3 3 <--> 1 2 3(1,3) 4(2,0) 5(3,2) removing edges with weight greater than 3 0 <--> 1 <--> 3 2 <--> 3 <--> 1 3(1,3)
