import sys

import networkx as nx

components = {
    (p := line.split(": "))[0]: p[1].split() for line in sys.stdin.read().splitlines()
}

targets = {t for c in components for t in components[c] if t not in components}

graph = nx.Graph()
graph.add_edges_from((u, v) for u, vs in components.items() for v in vs)

cut = nx.minimum_edge_cut(graph)
graph.remove_edges_from(cut)

c1, c2 = nx.connected_components(graph)

# part 1
answer_1 = len(c1) * len(c2)
print(f"answer 1 is {answer_1}")

# part 2
answer_2 = ...
print(f"answer 2 is {answer_2}")