摘要:
莫比乌斯函数之和 51Nod - 1244 题意: 1 #include <bits/stdc++.h> 2 using namespace std; 3 #define ll long long 4 const int maxn=1e7+5; 5 int mu[maxn], pri[maxn]; 阅读全文
摘要:
Find the Border UVALive - 3218 PSGL 1 #include <bits/stdc++.h> 2 using namespace std; 3 #define pb push_back 4 const double eps = 1e-8; 5 const int in 阅读全文