数据生成器

#include <iostream>
#include <fstream>
#include <random>
#include <ctime>

using namespace std;

int main() {
    mt19937 rng(time(0));
    uniform_int_distribution<int> n_dist(5, 10);      // n 和 m 范围
    uniform_int_distribution<int> a_dist(1, 5);      // a_i 范围
    uniform_int_distribution<int> pos_dist;            // 区间范围（后面初始化）

    int n = n_dist(rng);
    int m = n_dist(rng);
    cout << n << " " << m << "\n";

    for (int i = 0; i < n; ++i) {
        cout << a_dist(rng) << (i + 1 == n ? "\n" : " ");
    }

    pos_dist = uniform_int_distribution<int>(1, n);
    for (int i = 0; i < m; ++i) {
        int l = pos_dist(rng);
        int r = pos_dist(rng);
        if (l > r) swap(l, r);
        cout << l << " " << r << "\n";
    }

    return 0;
}