#include <iostream>
#include <vector>
using namespace std;
 
int main() {
	vector<int> test;
	test.push_back(1);
	test.push_back(2);
	test.push_back(3);
 
	for (unsigned int i = 0; i < test.size(); i++)
	{
		cout << "At [" << test[i] << "]" << endl;
		if (test[i] == 2)
		{
			test.erase(test.begin() + i);
			i--;
		}
	}
 
	cout << "Again" << endl;
 
	for (unsigned int i = 0; i < test.size(); i++)
	{
		cout << "At [" << test[i] << "]" << endl;
	}
	return 0;
}

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