#include <iostream>
#include <map>
#include <utility>   // for make_pair
int main()
{
  std::map< int, char > aMap;
  aMap.insert( std::make_pair(10, 'M') );
  aMap.insert( std::make_pair(15, 'A') );
  //int delta = aMap[1].first- aMap[0].first;   // ERROR
  //std::cout << delta << "\n";
  std::cout<<aMap[1];
  return 0;
}