随机数据生成程序

#include <cstdio>
#include <cstdlib>
#include <ctime>
using namespace std;

const int MOD = 10000;

const int random_pos()
{
    return rand() * rand() % MOD;
}

const int random_neg()
{
    return (rand() - rand()) * rand() % MOD - 2 * MOD;
}

int main()
{
    freopen("chance10.in", "w", stdout);
    srand(time(0));
    int n = 98;
    int m = random_pos();
    printf("%d %d\n", n, m);
    for (int i = 1; i <= n; i++) {
        int c = random_pos(), h = random_neg();
        printf("%d %d\n", c, h);
    }
    return 0;
}