42. Filter by Name or Age C++

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

int main()
{
    using namespace std;

    int n;
    cin >> n;

    string name;
    int age;
    map<string, int> people;
    for (int i = 0; i < n; ++i)
    {
        cin >> name >> age;
        people[name] = age;
    }

    string filter;
    cin >> filter;

    if (filter == "name")
    {
        cin >> name;
        if(people.find(name) != people.end())
            cout << "name : " << name << " age : " << people[name] << endl;
    }
    else if (filter == "age")
    {
        cin >> age;
        for(auto w : people)
            if(w.second == age)
                cout << "name : " << w.first << " age : " << age << endl;
    }

    return 0;
}