[백준] 15652번 N과 M (4) / C++

#include <iostream>

using namespace std;

int n, m;
int arr[8] = { 0 };

void dfs(int num, int cnt)
{
	if (cnt == m)
	{
		for (int i = 0; i < m; ++i)
		{
			cout << arr[i] << " ";
		}

		cout << '\n';
		return;
	}

	for (int i = num; i <= n; ++i)
	{
		arr[cnt] = i;
		dfs(i, cnt + 1);
	}
}

int main()
{
	ios::sync_with_stdio(false);
	cin.tie(nullptr);

	cin >> n >> m;

	dfs(1, 0);

	return 0;
}