摘要： #include <bits/stdc++.h> #define dbg(x) std::cerr << #x << "=" << x << "\n" using i64 = long long; #define int i64 void exgcd(int &gcd, int a, int b, 阅读全文

摘要： #include <bits/stdc++.h> #define dbg(x) std::cerr << #x << "=" << x << "\n" using i64 = long long; const int N = 105; std::vector<double> f[N]; void o 阅读全文