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#include <iostream>
#include <iomanip>
#include <ios>
#include <string>
#include <vector>
#include <algorithm>

using std::cin;
using std::cout;
using std::endl;
using std::sort;
using std::string;
using std::vector;

int main ()
{
    cout << "Enter integers";

    vector<int> vec;
    int x;

    while (cin >> x)
        vec.push_back(x);

    typedef vector<int>::size_type vec_sz;
    vec_sz size = vec.size();

    if (size==0){
        cout << endl << "haha no" << endl;
        return 1;
    }

    int b;
    b = size / 4;

    int n;
    n = b;

    sort(vec.begin(), vec.end());

    while (0 < b){
        cout << vec[b] << endl;
        --b;
    }

    while (n < n + b){
        cout << vec[n+b] << endl;
        --b;
    }

    while (2*n < 2*n + b){
        cout << vec[2*n+b] << endl;
        --b;
    }

    while (3*n < 3*n + b){
        cout << vec[3*n+b] << endl;
        --b;
    }


    system("pause");
    return 0;

}