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

class A
{
public:
	A(){std::cout << "constr" << std::endl;}
	~A(){std::cout<<"dest"<<std::endl;}
};

int main() {
	std::vector<A> a;
	a.emplace_back();
	a.emplace_back();
	
	return 0;
}