类欧几里得 ​ 给定三个式子.对其进行化简. \(f(a,b,c,n)=\sum_{i=0}^n⌊\frac{ai+b}{c}⌋\) \(g(a,b,c,n)=\sum_{i=0}^ni⌊\frac{ai+b}{c} […]