#include <iostream>
#include <map>

int main() {
    std::map<int, char> m { {1, 'a'}, {2, 'b'}, {3, 'c'} };
    const auto p = m.insert(std::make_pair(2, 'z'));
    for (const auto p: m) 
        std::cout << p.first << ' ' << p.second << std::endl;
    std::cout << p.first->first << ' ' << p.first->second << ' ' << 
        std::boolalpha << p.second << std::endl;       
}