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

struct Data
{
	int a = 7;
};


int main() {
	// your code goes here
	
	Data elem;
	
	std::vector<Data> v;
	
	
	v.emplace_back(elem);
	
	std::cout << elem.a << std::endl;
	
	return 0;
}