1.microRTS(java)
microRTS是java写的跨平台的小型即时战略模拟器。
Farama-Foundation/MicroRTS: A simple and highly efficient RTS-game-inspired environment for reinforcement learning (github.com)https://github.com/Farama-Foundation/Micr…
通过/p改变为互质的情况
维护欧拉函数前缀和即可。 GCD - 洛谷
#include<bits/stdc.h>
using namespace std;
const int N 1e78;
vector<int> pri;
bool not_prime[N];
long long phi[N];
long long sum[N];
void pre(int n) {phi[1] 1;for (int i 2; i < …