def extract_arguments(fh):
    N = int(fh.readline().strip())
    edges = []
    for _ in range(N - 1):
        a, b, c = map(int, fh.readline().strip().split())
        edges.append((a, b, c))
    Q, K = map(int, fh.readline().strip().split())
    queries = []
    for _ in range(Q):
        x, y = map(int, fh.readline().strip().split())
        queries.append((x, y))
    return N, edges, Q, K, queries

# if __name__ == "__main__":
#     input_path = sys.argv[1]
#     with open(input_path, 'r') as fh: 
#     N, edges, Q, K, queries = extract_arguments(fh)
#     f(N, edges, Q, K, queries)