#include <iostream>
using namespace std;

class samp{
	int a;
public:
	samp(int n){a = n;}
	int get_a(){return a;}
};

int main()
{
	samp ob[4] = {-1,-2,-3,-4};
	for(int i = 0; i < 4; i++) cout << ob[i].get_a();
	
	cout << "\n";
	
	return 0;
}