Codeforces Round 838 D(gcd)E(Cayley's formula)F(DP,线段树)G(构造) gcd 树 DP 线段树 构造 Cayley's formula

formula 標籤

2022

12-15

Codeforces Round 838 D(gcd)E(Cayley's formula)F(DP,线段树)G(构造)

gcd 树 DP 线段树 构造 Cayley's formula