#! /usr/bin/python3
import networkx as nx
from networkx.algorithms import bipartite

f = open("data.txt", "r")
leftnodes = set()
rightnodes = set()
edges = []
for line in f.readlines():
    l,r = line.split()
    leftnodes.add(l)
    rightnodes.add(r)
    edges.append((l,r))
print(leftnodes)
print(rightnodes)
print(edges)
B = nx.Graph()
B.add_nodes_from(leftnodes, bipartite = 0)
B.add_nodes_from(rightnodes, bipartite = 1)
B.add_edges_from(edges)
nx.draw(B)