雑用 1
区间加法可以差分的原因是 $\Delta_i = \Delta_{i-1}$,所以令 $\textit{d}_i = \Delta_i-\Delta_{i-1}$,对于一个一般点的 $\Delt...
In mathematics you don't understand things, you just get used to them.
In mathematics you don't understand things, you just get used to them.