1 //@auther Yang Zongjun 2 #include <iostream> 3 #include <cstdio> 4 #include <cmath> 5 #include <algorithm> 6 #include <string> 7 #include <cstring> 8  9 using namespace std;10 #define PI acos(-1.0)11 #define EPS 1e-812 const int MAXN = 1100000;13 const int INF = 2100000000;14 15 16 17 int main()18 {19     //freopen("C:/Users/Administrator/Desktop/input.txt", "r", stdin);20     21     return 0;22 }