每次写程序时的样本

 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-8
12 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 }