test
date: '2025-01-12'title: '新加坡国家博物馆と Marina Bay と SG Flyer'
test
date: '2025-01-12'title: '新加坡国家博物馆と Marina Bay と SG Flyer'
Solution -「CF 1864H」Asterism Stream
没想到吧，还有题解更新。Problem statement.首先朴素的做法即令 $f(x)$ 为从 $x$ 出发到达任一 $\geqslant n$ 的数的期望步数，转移显然是 $f(x) = ...
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