摘要: AC代码: #include<cstdio> #include<algorithm> typedef long long ll; using namespace std; ll phi[10000005]; ll prime[10000005],num=0; bool vis[10000005]; 阅读全文
posted @ 2018-10-07 11:12 l..q 阅读(208) 评论(0) 推荐(1)