54 lines
1.3 KiB
Python
54 lines
1.3 KiB
Python
import queue
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with open("7.txt") as f:
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edges = dict()
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edges2 = dict()
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import re
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pat = re.compile("""
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^(.*)\ bags?\ contain\
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(?:
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(?:no\ other\ bags)
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| (?: (\d+)\ (.*)\ bags? (,\ (\d+)\ (.*)\ bags?)* )
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)
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.$
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""", flags=re.VERBOSE)
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for line in f:
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a, b = line.split("contain")
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outer = a.strip().rstrip("bags").strip()
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if outer not in edges2:
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edges2[outer] = dict()
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inner = b.strip().rstrip(".").split(", ")
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# print(inner)
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if inner == ["no other bags"]: continue
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for n in inner:
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num = int(re.match("^(\d+)\s.*", n).groups()[0])
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color = re.sub("^(\d+)\s", "", n)
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color = re.sub("\sbags?$", "", color)
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# print(color)
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edges2[outer][color] = num
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if color not in edges:
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edges[color] = set()
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edges[color].add(outer)
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# print(edges)
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found = set()
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q = queue.Queue()
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q.put("shiny gold")
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while not q.empty():
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c = q.get()
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r = edges.get(c, set())
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# print(c, r)
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for c1 in r:
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if c1 not in found:
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q.put(c1)
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found.add(c1)
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print(len(found))
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print(edges2)
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def visit(color):
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r = edges2.get(color, set())
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c = 1
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for col, n in r.items():
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c += n * visit(col)
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# print(f"{color} contains {c} other bags")
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return c
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print(visit("shiny gold") - 1)
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