What is the output?

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

int main()
{
	stack<int> s, ss;  //declare two stacks

	//Check whether s is empty.
	cout<<"Empty or not? "<<s.empty()<<endl;
	cout<<"The size is "<<s.size()<<endl;

	//I randomly push some numbers into s
	s.push(100);
	s.push(500);
	s.push(2);
	s.push(13);
	cout<<"We push 100, 500, 2, 13 into s. "<<endl;
	cout<<"\nThe size is "<<s.size()<<endl<<endl;

	//print the elements from top to bottom
	cout<<"Print s from top:"<< endl;
	while(!s.empty())
	{
		cout<<s.top()<<" "; 
		s.pop();
	}
	cout<<endl<<endl;
 
        //push elements of an array into s
	int arr[]={1,5,10};
	for(int i=0; i<3;i++)
		s.push(arr[i]);
	cout<<"Push elements of array, 1, 5, 10 into s."<<endl;
	// move elements from s to ss
	while(!s.empty())
	{
		ss.push(s.top());
		s.pop();
	}
	cout<<"Move elements from s to ss. "<<endl;
	cout<<"Elements in s are "<<endl;
	while(!s.empty())
	{
		cout<<s.top()<<" ";
		s.pop();
	}
	cout<<endl;

	cout<<"Elements in ss are "<<endl;
	while(!ss.empty())
	{
		cout<<ss.top()<<" ";
		ss.pop();
	}
	cout<<endl;

	system("pause");
        return 0;
}

The output is