#include <iostream>
#include <string>
#include <map>
using namespace std;
int main() {
map<string, int> m;
m.insert(pair<string, int>("A", 100));
m.insert(pair<string, int>("G", 300));
m.insert(pair<string, int>("B", 200));
// Declare an iterator to a map<string, int>.
map<string, int>::iterator itr;
// Declare a reverse iterator to a map<string, itr>.
map<string, int>::reverse_iterator ritr;
// show the contents of m in reverse order.
cout << "The contents of m in reverse:\n";
for(ritr=m.rbegin(); ritr != m.rend(); ++ritr)
cout << " " << ritr->first << ", " << ritr->second << endl;
cout << endl;
return 0;
}
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