37 lines
743 B
Python
37 lines
743 B
Python
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import re
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from tracemalloc import start
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import numpy as np
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f = open('input.txt', 'r')
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my_graph = dict(dict())
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content = f.read()
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lines = content.splitlines()
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instructions = []
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for line_count, line in enumerate(lines):
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if line_count == 0:
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instructions = line
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else:
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numbers = re.findall(r'[A-Za-z]+', line)
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if len(numbers) == 3:
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my_graph[numbers[0]] = {"L": numbers[1], "R": numbers[2]}
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print(my_graph)
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starting_key = 'AAA'
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ending_key = 'ZZZ'
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inst_idx = 0
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steps = 0
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current_key = starting_key
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while current_key != ending_key:
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current_key = my_graph[current_key][instructions[inst_idx]]
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steps += 1
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inst_idx = (inst_idx + 1)%len(instructions)
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print(steps)
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f.close()
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