#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

int main() {
	vector<int> ints{ 1, 2, 3, 4, 5 };
	vector<double> doubles;
	
	copy( ints.begin(), ints.end(), back_inserter( doubles ) );
	
	cout << doubles[2] << endl;
}