OJ编制变，以a+b为例

编制生成数据文件，命名为_random.cpp_,输出到 data.in.

#include<ctime>
#include<cstdlib>
#include<bits/stdc++.h> 
using namespace std;
int main(){
    freopen("data.in","w",stdout);
    srand((unsigned)time(0));
    cout<<rand()%2e9<<rand()%2e9;
    return 0;
}

编制正确答案文件，命名为_bf.cpp_,从 data.in_读入， 输出到 _data.ans.

#include<bits/stdc++.h>
using namespace std;
int main(){
    freopen("data.in","r",stdin);
    freopen("data.ans","w",stdout);
    cin>>a>>b;
    cout<<a+b;
}

你打算提交的代码，命名为_sol.cpp_,从 data.in_读入， 输出到 _data.out.

Oj 部分,用_.ba t_文件

@echo off
:loop
   random.exe > data.in
   bf.exe < data.in >data.ans;
   echo  开始  %time%
   sol.exe < data.in > data.out
   echo  结束  %time%
   fc data.ans data.out
if errorlevel 1 pause
goto loop