using namespace std;

MapCode codes;

codes.insert(Pair(415, "San Francisco"));

codes.insert(Pair(510, "Oakland"));

codes.insert(Pair(718, "Brooklyn"));

codes.insert(Pair(718, "Staten Island"));

codes.insert(Pair(515, "San Rafael"));

codes.insert(Pair(510, "Berkeley"));

cout << "Number of cities with area code 415: " << codes.count(415) << endl;

cout << "Number of cities with area code 718: " << codes.count(718) << endl;

cout << "Number of cities with area code 510: " << codes.count(510) << endl;

cout << "Area Code City\n";

MapCode::iterator it;

for (it = codes.begin(); it != codes.end(); ++it) {

cout << " " << (*it).first << " " << (*it).second << endl;

}

pair<MapCode::iterator, MapCode::iterator> range = codes.equal_range(718);

cout << "Cities with area code 718:\n";

for (it = range.first; it != range.second; ++it) {

cout << (*it).second << endl;

}