[백준] 📂. (15650번) N과 M (2)

🗒️ 15650번) N과 M (2)

#include <iostream>
using namespace std;

int sel[8];
bool isused[8];
int N, M;

void Sequence(int start, int count)
{
	if (count == M)
	{
		for (int i = 0; i < M; i++)
			cout << sel[i] << ' ';
		cout << '\n';
		return;
	}

	for (int i = start; i < N; i++)
	{
		if (isused[i])
			continue;
		sel[count] = i + 1;
		isused[i] = true;
		Sequence(i + 1, count + 1);
		isused[i] = false;
	}
}

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

	cin >> N >> M;
	Sequence(0, 0);

	return 0;
}