백준 소스코드 [C++] 15649 N과 M 1

https://www.acmicpc.net/problem/15649

15649번: N과 M (1)

백준 소스코드 [C++] 15649 N과 M 1

#include <iostream>
#include <utility>
#include <vector>
#include <algorithm>
using namespace std;
int arr[8] = { 1,2,3,4,5,6,7,8};
void print(vector <int>& v) {
	for (int i = 0;i < (int)v.size();i++)
		cout << v[i] << " ";
	cout << '\n';
}
void dfs(vector <int>&v,int in,int out) {
	if ((int)v.size() == out) {
		print(v);
		return;
	}
	else {
		for (int i = 0;i < in;i++) {
			if (v.empty() != true && count(v.begin(), v.end(), arr[i]) != 0)continue;
				v.push_back(arr[i]);
				dfs(v, in, out);
				v.pop_back();
		}
	}
}
int main() {
	int n, m;
	cin >> n >> m;
	vector <int> v;
	dfs(v, n, m);
 	return 0;
}