摘要: code #include<iostream> #include<algorithm> #include<complex> using namespace std; const int N= 2000000; int p[N+1]={0}; unsigned long long S[N+1]; in 阅读全文
posted @ 2022-03-01 09:22 ethon-wang 阅读(73) 评论(0) 推荐(0) 编辑