```cpp
#include<iostream>
#include<cstdio>
#include<cstdlib>
#include<ctime>
using namespace std;
int main()
{
int cc=clock();
//主程序
cerr<<clock()-cc<<" ms"<<endl;
}
```
by _RSY_ @ 2018-12-22 16:59:48
```
cout << (double)clock()/CLOCKS_PER_SEC;
```
by Billy●Herrington @ 2018-12-22 17:03:45
DEV-C++自带(滑稽
by HAO233 @ 2018-12-22 17:34:55
@[071016helen](/space/show?uid=130227) 去洛谷在线IDE
by qwertylzx·破祥 @ 2018-12-22 17:37:15
灰常感谢各位神犇QAQ
by 兔小柒柒柒柒 @ 2018-12-31 16:09:15