版本1
```cpp
#include<cstdio>
#include<cstdlib>
#include<ctime>
int main()
{
for(int s,t;;printf("WA time: %dms\n",t-s),system("fc data.out data.ans"),system("pause>nul"))
for(system("cls");;)
{
system("Testdata > data.in"),s=clock(),system("my < data.in > data.out"),t=clock(),system("std < data.in > data.ans");
if(system("fc data.out data.ans > nul"))break;else printf("AC time: %ldms\n",t-s);
}
return 0;
}//Testdata是数据生成程序,my是选手程序,std是正确程序,t-s是运行时间
```
版本2
```cpp
#include<cstdio>
#include<cstdlib>
#include<ctime>
int main()
{
for(int s,t;;)
{
system("cls");
for(;;)
{
system("data > data.in");//data是数据生成程序
s=clock();
system("a < data.in > data.out");//a是要交的程序
t=clock();
system("b < data.in > data.ans");//b是正确的程序
if(system("fc data.out data.ans > nul"))break;
else printf("AC time: %ldms\n",t-s);
}
printf("WA time: %dms\n",t-s);//运行时间
system("fc data.out data.ans");
system("pause>nul");
}
return 0;
}
```