3. Order

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

using namespace std;

int main()
{
    string line, name, id;

    map<string, string> companies;

    while (true) {
        getline(cin, line);
        if (line == "end") {
            break;
        }
        name = line.substr(0, line.find(' '));
        id = line.substr(line.find(' ') + 1);

        companies.insert({ id, name });
    }

    for (auto& c : companies ) {
        cout << c.second << ' ' << c.first << endl;
    }
    return 0;
}