#include <list>
#include <iostream>

using namespace std;

int main() {
	list<int> l;
	for (int i=0; i<10; i++) {
		l.push_back(i);
	}

	list<int>::iterator it;
	for (it=l.begin(); it!=l.end();) {
		cout << *it << endl;
		if (*it%2 == 0) {
			l.erase(it++);
		} else {
			it++;
		}
	}

	cout << endl;

	for (it=l.begin(); it!=l.end(); it++) {
		cout << *it << endl;
	}
}