#include <iostream>
#include <ctime>
#include <string>
#include <io.h>
#include <fcntl.h>
using namespace std;

const wstring source_characters = L"йцукенгшщзхъфывапролджэячсмитьбю1234567890ЙЦУКЕНГШЩЗХЪФЫВАПРОЛДЖЭЯЧСМИТЬБЮ~`!@#$%^&*()_+-=\";:?{}[]\\|/'.,<> qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM";
const wstring characters_set = L"qwertyuiopasdfghjklzxcvbnm1234567890QWERTYUIOPASDFGHJKLZXCVBNM~`!@#$%^&*()_+-=\";:?{}[]\\|/'.,<>¡¢£¤¥¦§©®µ¼½DZƕƔƓƒƑƘƜƝƞƟƠơƢƣƤƥƦƧƨƩƪƫƬƭƮƯưƱƲƳƴƵƶƷƸƹƺƻƼƽƾƿǀǁǂǾǽǼǻȀȄȐ";

wstring characters_encrypt(wstring characters_set);
wstring input_string_encrypting(wstring input_message, wstring source_characters, wstring encrypted_characters);
wstring input_string_decrypting(wstring input_message, wstring encrypted_characters, wstring encrypted_string);

int main() {
    setlocale(LC_ALL, "");
    _setmode(_fileno(stdout), _O_U16TEXT);

    wstring encrypted_characters = characters_encrypt(characters_set);

    wstring input_message = L"Я помню чудное мгновенье: Передо мной явилась ты, Как мимолетное виденье, Как гений чистой красоты. В томленьях грусти безнадежной В тревогах шумной суеты, Звучал мне долго голос нежный И снились милые черты.";

    wstring encrypted_string = input_string_encrypting(input_message, source_characters, encrypted_characters);

    wstring decrypted_string = input_string_decrypting(input_message, encrypted_characters, encrypted_string);

    return 0;
}

wstring characters_encrypt(wstring characters_set)
{
    int num;
    wstring encrypted_characters;
    bool duplicate;
    srand(time(NULL));
    wcout << characters_set << '\n';
    int used_numbers[200];
    for ( int i = 0; i < characters_set.size(); i++ )
    {
        num = 1 + rand() % characters_set.size() - 1;
        for ( int j = 0; j < i + 1; j++ )
        {
            if ( used_numbers[j] == num )
            {
                duplicate = true;
                i--;
                break;
            }
            duplicate = false;
        }
        if ( !duplicate )
        {
            used_numbers[i] = num;
            encrypted_characters += characters_set[num];
        }
    }

    wcout << encrypted_characters << '\n';

    return encrypted_characters;
}

wstring input_string_encrypting(wstring input_message, wstring source_characters, wstring encrypted_characters)
{
    wstring encrypted_string;
    int char_pos;

    for ( int k = 0; k < input_message.size(); k++ )
    {
        char_pos = source_characters.find(input_message[k]);
        encrypted_string += encrypted_characters[char_pos];
    }

    wcout << '\n' << encrypted_string << '\n';

    return encrypted_string;
}

wstring input_string_decrypting(wstring input_message, wstring encrypted_characters, wstring encrypted_string)
{
    wstring decrypted_string;
    int char_pos;

    for ( int k = 0; k < input_message.size(); k++ )
    {
        char_pos = encrypted_characters.find(encrypted_string[k]);
        decrypted_string += source_characters[char_pos];
    }

    wcout << '\n' << decrypted_string << '\n';

    return decrypted_string;
}