deg_seq_w - Compute the degree and strength sequence of a graph
deg_seq_w computes the degree and the strength sequence of graph_in.
-(dash), read the edge list from STDIN.
The program prints on STDOUT the degree and strength sequence of graph_in in the format:
k_1 s_1 k_2 s_2 k_3 s_3 ....
k_i is the degree of the i-th node and
s_i is its strength.
(c) Vincenzo 'KatolaZ' Nicosia 2009-2017