摘要:
A. Reachable Numbers A. Reachable Numbers Let's denote a function f(x)f(x) in such a way: we add 11 to xx, then, while there is at least one trailing 阅读全文
posted @ 2019-07-24 17:41
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摘要:
B. Long Number B. Long Number You are given a long decimal number aa consisting of nn digits from 11 to 99. You also have a function ff that maps ever 阅读全文
posted @ 2019-07-24 17:38
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