摘要：
Let’s considerK-based numbers, containing exactlyNdigits. We define a number to be valid if itsK-based notation doesn’t contain two successive zeros. For example:1010230 is a valid 7-digit number;1000198 is not a valid number;0001235 is not a 7-digit number, it is a 4-digit number.Given two numbersN 阅读全文
