摘要:
A Mathematical Addition 容易推出\(-\frac{v^2}{u^2}=\frac{x}{y}\)所以\(x=-v^2\) \(y=u^2\) #include<bits/stdc++.h> #define int long long using namespace std; 阅读全文
摘要:
CF1612 CF1029 CF1672 CF1875 CF1584 CF1725 CF1139 CF1152 阅读全文