#!/usr/bin/env python3
from functools import reduce
from re import findall
from copy import deepcopy
import sys
# import numpy as np

filename = sys.argv[1] if len(sys.argv) == 2 \
    else "in/" + sys.argv[0].split('/')[-1].rstrip(".py") + ".pzl"
data = open(filename).read()
lines = data.rstrip('\n').split('\n')

D = dict()
for line in lines:
    l, r = line.split(':')
    r = r.strip().split(' ')
    if l in D:
        assert False
    D[l] = r

def dfs(start, end, visited, D, depth=0):
    if start in visited:
        return 0
    visited.add(start)

    if start == end:
        return 1

    s = 0
    if start in D:
        for node in D[start]:
            s += dfs(node, end, visited.copy(), D, depth+1)
    else:
        if start != 'out':
            print('end of path', start)
    return s
res1 = dfs('you', 'out', set(), D)

# export graphviz
# for l in D:
#     for r in D[l]:
#         print(f"{l} -> {r}");

p1 = dfs('svr', 'fft' , set(['rmc', 'ibq', 'zdx', 'foc']), D)
p2 = dfs('fft', 'dac' , set(['iwg', 'kxp', 'fnk', 'you']), D)
p3 = dfs('dac', 'out' , set(), D)
res2 = p1 * p2 * p3

print('res1:', res1)
print('res2:', res2)