#include <iostream> #include <cstdio> #include <cmath> #include <algorithm> #include <stack> #include <queue> #include <map> #include <cstring> #include<windows.h> #include <iomanip> const int N = 1e3+ 10; const int INF = 0x3f3f3f3f; using namespace std;

int main() { for(int i = 1 ; i <= 10 ; i ++ ) system("ping ybt.ssoier.cn"); return 0; }