#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <Windows.h>
#include <fstream>
#include <map>




int main() {

    SetConsoleCP(1251);
    SetConsoleOutputCP(1251);

    std::ifstream fin("eng-rus dictionary.txt");
    std::ofstream fout("rus-eng dictionary.txt");

    if (!fin.is_open() || !fout.is_open()) {
        std::cout << "Ошибка открытия файла" << std::endl;
    }
    else {
        std::map<std::string, std::string> dict;
        std::string word, translation;

        fin >> word >>translation;
        while (!fin.eof()) {
            dict[translation] = word;
            fin >> word >> translation;
        }

        for (const auto& a : dict) {
            fout << a.first;
            for (int i = 0; i < 20 - a.first.size(); i++) {
                fout << " ";
            }
            fout << a.second << std::endl;
        }

        fin.close();
        fout.close();
    }


}