#include<iostream>
#include<list>
using namespace std;
int main()
{
	list<int *> l;
	for(int i=1;i<=100;i++)
	{


		int* temp=new int;
		*temp=i;
		l.push_back(temp);
	}
	list<int *>::iterator it=l.begin();
	list<int *>::iterator ittemp=l.begin();
	for(;it!=l.end();++it)
	{
		cout<<*(*it)<<endl;


	}
	it=l.begin();
	ittemp=l.begin();
	for(;it!=l.end();)
	{
		ittemp=it;
		++it;
		delete (*ittemp);
		l.erase(ittemp);


	}
	cout<<l.size()<<endl;
	return 0;


}