68 lines
1.4 KiB
Python
68 lines
1.4 KiB
Python
def gettree():
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file = open("input.txt")
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tree = {}
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for bag_line in file:
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bags = bag_line.strip().split(",")
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top_bag_line = bags[0].split(" ")
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top_bag = top_bag_line[0] + " " + top_bag_line[1]
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tree[top_bag] = {}
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for index, bag in enumerate(bags):
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words = bag.split(" ")
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if words[4] == 'no':
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continue
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if index == 0:
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rule = words[5] + " " + words[6]
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num = int(words[4])
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tree[top_bag][rule] = num
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else:
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rule = words[2] + " " + words[3]
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num = int(words[1])
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tree[top_bag][rule] = num
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return tree
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def countShine(bag, tree):
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item = tree[bag]
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if 'shiny gold' in item:
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return item['shiny gold']
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else:
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sum = 0
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for child in tree[bag]:
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sum += countShine(child, tree)
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return sum
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def countBags(bag, tree):
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rule = tree[bag]
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sum = 0
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for child in rule:
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sum += rule[child] + (rule[child] * countBags(child, tree))
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return sum
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def part1():
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tree = gettree()
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count = 0
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for bag in tree:
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if countShine(bag, tree) > 0:
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count += 1
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print("Part 1: %d" % count)
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def part2():
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tree = gettree()
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count = countBags('shiny gold', tree)
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print("Part 2: %d" % count)
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if __name__ == "__main__":
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part1()
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part2()
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