2019-01-25 02:52:40 +08:00
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"""
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贪婪法：在对问题求解时，总是做出在当前看来是最好的选择，
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不追求最优解，快速找到满意解。
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"""
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class Thing(object):
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"""物品"""
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def __init__(self, name, price, weight):
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self.name = name
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self.price = price
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self.weight = weight
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@property
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def value(self):
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"""价格重量比"""
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return self.price / self.weight
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def input_thing():
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"""输入物品信息"""
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name_str, price_str, weight_str = input().split()
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return name_str, int(price_str), int(weight_str)
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def main():
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"""主函数"""
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max_weight, num_of_things = map(int, input().split())
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all_things = []
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for _ in range(num_of_things):
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all_things.append(Thing(*input_thing()))
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all_things.sort(key=lambda x: x.value, reverse=True)
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total_weight = 0
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total_price = 0
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for thing in all_things:
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if total_weight + thing.weight <= max_weight:
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print(f'小偷拿走了{thing.name}')
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total_weight += thing.weight
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total_price += thing.price
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print(f'总价值: {total_price}美元')
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if __name__ == '__main__':
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main()
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