#!/bin/python3

import re
import sys
from pprint import pprint 
from collections import Counter
import numpy as np

input_f  = sys.argv[1]

def pp(x):
    for i in x:
        for j in i:
            print(j)
        print()

d, *maps = open(input_f).read().split('\n')


class Node():
    def __init__(self,value,left,right):
        self.value = value
        self.left = left
        self.right = right

s = []
l = []
r = []

maps = maps

nodes = {}

for i in maps:
    if i == '':
        continue
    s = i[:3]
    l = i[7:10]
    r = i[12:15]
    nodes[s] = Node(s,l,r)

pprint(nodes)

current = 'AAA'
steps = 0
index = 0
directions = d
while current != 'ZZZ':
    steps += 1
    directions = directions[index]
    if directions == 'L':


print(steps)