#include "stack.h"
#include <iostream>
using namespace std;

int main(void)
{
	Stack stack1;
	stack1.push(1);
	stack1.push(2);
	stack1.push(3);
	stack1.push(4);
	cout << stack1.pop()<<"\n";
	cout << stack1.pop()<<"\n";
	cout << stack1.pop()<<"\n";
	cout << stack1.pop()<<"\n";
	cout << stack1.pop()<<"\n";
	cout << stack1.pop()<<"\n";
	
	return 0;
}