#include <map>
#include <string>
#include <iostream>

using namespace std;

void printMap(map<string, int> const& m)
{
    for(auto const& p : m)
		cout << p.first << " -> " << p.second << endl;
}

int main()
{
	map<string, int> m;
	
	m["Ding"] = 0;
	m["Dong"] = 1;
	m["Value"] = 284;
	
	printMap(m);
	
	m["Ding"] = 10;
	
	printMap(m);
	
	return 0;
}