AOC 2018 - Day 1 - Python

aoc2018_day1.py

# Part 1

print(sum([int(num) for num in open('day1.txt')]))

# Part 2

diffs = [int(num) for num in open('day1.txt')]
freq = 0
freqs = {}
i = 0
while True:
    freq += diffs[i % len(diffs)]
    i += 1
    if freq not in freqs:
        freqs[freq] = 1
    else:
        print(freq)
        break