#!/bin/python

def check(bag, rules):
    if "shiny gold" in rules[bag]:
        return True
    
    result = False
    for possible_bag in rules[bag]:
        result = result or check (possible_bag, rules)

    return result

# $color bags contain {$number $color bags,}*x

# color: {colors}
rules = {}

with open("input", 'r') as input:
    for line in input:
        line = line.strip()
        parts = line.split(" bags contain ")
        key = parts[0]
        value = []

        parts = parts[1].strip(".").split(", ")
        
        for part in parts:
            if part == "no other bags":
                break;
            value.append(part.split(" ", 1)[1].replace("bags", "").replace("bag", "").strip())

        rules[key] = value


    total = 0
    for key in rules:
        print(f"Now checking: {key}")
        if check(key, rules):
            total += 1

    print(total)