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#include <iostream>
#include <string>
#include <vector>
#include "windows.h"

using namespace std;

int main() {
    SetConsoleOutputCP(CP_UTF8);
    string input;
    cout << "Введите строку: ";
    getline(cin, input);

    vector<char> output;
    for (int i = 0; i < input.length(); i += 4) {
        output.push_back(input[i]);
        output.push_back(input[i + 1]);
    }

    cout << "Результат: ";
    for (char *p = &output[0]; p != &output[0] + output.size(); ++p) {
        cout << *p;
    }
    cout << endl;
}