#include <iostream>
#include <map>
 
using namespace std;
 
int main() {
  	map<int, char> v = {{1, 'a'}, {7, 'd'}};
  	auto it = v.begin();
 
  	for (; it != v.end(); it++) {
  		//cout << "Current it position = " << it - v.begin() << endl;
  		//auto it2 = it++;
 
  	    // TODO #1: Erasing the last element cause infinitive loop 
  	    // (ONLY valid for vector, not map)
  		if (it->first == 7) v.erase(it);
 
  		// TODO #2: If not #1, next to deleted element 
  		// is stepped over (not erased)
  		// (ONLY valid for vector, not map)
 
  		//cout << "Erased element: " << *it2 << endl;
  		//v.erase(it2);
  	}
 
  	// 
  	cout << "Ended. Map size: " << v.size() << endl;
 
	return 0;
}

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