import re
import math

f = open('input.txt', 'r')
data = f.read().strip()

instructions = data.split('\n')[0]
table = data.split('\n\n')[1].split('\n')

tuplemap = {}
sources_list_par2 = []

for tuple in table:
    source, left, right = re.findall(r"[A-Z]{3}", tuple)
    tuplemap[source] = (left, right)

    if source[2] == 'A':
        sources_list_par2.append(source)


current_symbol = 'AAA'
i = 0
mod = len(instructions)

steps = 0
while current_symbol != 'ZZZ':
    steps += 1
    current_move = instructions[i]
    i += 1
    i %= mod

    if current_move == 'L':
        current_symbol = tuplemap[current_symbol][0]
    else:
        current_symbol = tuplemap[current_symbol][1]


sources_length_part2 = []
for s in sources_list_par2:
    current_symbol = s

    i = 0
    steps_p2 = 0
    while current_symbol[2] != 'Z':
        steps_p2 += 1
        current_move = instructions[i]
        i += 1
        i %= mod
        if current_move == 'L':
            current_symbol = tuplemap[current_symbol][0]
        else:
            current_symbol = tuplemap[current_symbol][1]

    sources_length_part2.append(steps_p2)

steps_part2 = math.lcm(*sources_length_part2)

print("Part 1:", steps)
print("Part 2:", steps_part2)