#include <iostream>
using namespace std;

class my_class {
public:
    static int count;
    my_class() {
        count++;
    }
    ~my_class() {
        count--;
    }
    static void print_count() {
        cout << count << " ";
    }
};
int my_class::count = 0;
int main() {
    my_class obj1;
    my_class::print_count();
    my_class obj2;
    obj2.print_count();
    my_class obj3;
    obj3.print_count();
    return 0;
}