#include <string>
#include <list>
#include <iostream>
using namespace std;
int main()
{
list<string> staff;
staff.push_back("A");
staff.push_back("B");
staff.push_back("C");
staff.push_back("D");
list<string>::iterator pos;
pos = staff.begin();
pos++;
pos++;
pos++;
staff.insert(pos, "E");
pos = staff.begin();
pos++;
staff.erase(pos);
for (pos = staff.begin(); pos != staff.end(); pos++)
cout << *pos << "\n";
return 0;
}
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