用 Windows 批处理对拍：
1. 新建一个批处理（.bat），代码如下：
:loop
@echo off data_creator.exe force_solution.exe correct_solution.exe
@echo on fc force_solution.out correct_solution.out if not errorlevel 1 goto loop pause
2. 创建一个数据生成程序，一个暴力程序，一个正解。
3. 循环运行这个批处理，对照 correct_solution 和 force_solution 的答案是否相同。
随机数生成器 Example（Data_Creator.cpp）
The function random(a, b) creates integers in the range [a, b]. The function randll(a, b) creates Int64 integers in the range [a, b].
Sentence srand(time(0)); is needed.
1 /* Data Creator 2 * Au: GG 3 */ 4 #include <cstdio> 5 #include <cstdlib> 6 #include <cstring> 7 #include <cmath> 8 #include <ctime> 9 #include <iostream> 10 #include <algorithm> 11 using namespace std; 12 13 // Create a random in range [a, b]. 14 // It can only create integers. 15 int random(int a, int b) { 16 if (rand() % 2) 17 return (rand() * 32768 + rand()) % (b - a + 1) + a; 18 else return (rand() * 32768 - rand()) % (b - a + 1) + a; 19 } 20 21 // Create a random in range [a, b] 22 // Supports Int64 numbers. 23 long long randll(long long a, long long b) { 24 if (rand() % 2) 25 return ((long long)random(0, 2147483647) * 2147483648ll + random(0, 2147483647)) % (b - a + 1) + a; 26 else return ((long long)random(0, 2147483647) * 2147483648ll - random(0, 2147483647)) % (b - a + 1) + a; 27 } 28 29 int n1, n2, a1, b1, a2, b2; 30 31 int main() { 32 freopen("data.out", "w", stdout); // write to file 33 srand(time(0)); // create a random seed 34 35 scanf("%d%d%d", &n1, &a1, &b1); 36 scanf("%d%d%d", &n2, &a2, &b2); 37 for (int i = 1; i <= n1; i++) 38 printf("%d ", random(a1, b1)); 39 for (int i = 1; i <= n2; i++) 40 printf("%lld ", randll(a2, b2)); 41 42 return 0; 43 }
srand(time(NULL)) 也是可行的，但不 secure。参见 https://stackoverflow.com/questions/26206780/is-srandtimenull-bad。
另外一种对拍方法：“管道”，即命令行参数。参见 http://blog.csdn.net/wlx65003/article/details/51149196。