摘要:
#include<iostream> #include<cstdio> #include<cmath> #define maxn 100009 using namespace std; typedef long long ll; int check_prime(int x)// 普通的素数判定 这里 阅读全文
摘要:
Background Hugo Heavy is happy. After the breakdown of the Cargolifter project he can now expand business. But he needs a clever man who tells him whe 阅读全文
摘要:
Freddy Frog is sitting on a stone in the middle of a lake. Suddenly he notices Fiona Frog who is sitting on another stone. He plans to visit her, but 阅读全文