湖南大學第十四屆ACM程序設計新生杯(重現賽)- FFind the AFei Numbers(數位dp)

題目連接html 題目描述 AFei loves numbers. He defines the natural number containing 「520」 as the AFei number, such as 1234520, 8752012 and 5201314. Now he wants to know how many AFei numbers are not greater th
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