#include <bits/stdc++.h>

using namespace std;

#define ALL(a) a.begin(), a.end()

int main()
{
	ios_base::sync_with_stdio(0);
	vector<int> vec = {1, 2, 3, 4, 5};
	set<int> setik;
	for(int i = 0;i < 5;++i)
	{
		setik.insert(i);
	}

	vector<int> vect;
	set_intersection(ALL(vec), ALL(setik), back_inserter(vect));

	for(auto it : vect)
	{
		cout << it << ' ';
	}

	return 0;
}