Квадратная страна

#include <iostream>
#include <conio.h>
#include <math.h>
#include <string>
#include <algorithm>
#include <vector>
#include <sstream>

using namespace std;

string prom(string l)
{
    string h="";
    int o = 4 - l.size();
    for (int i = 0; i < o ; i++)
        h += ' ';
    return h;
}

string convertInt(int number)
{
    stringstream ss;
    ss << number;
    return ss.str();
}

void d(int n, int k, vector <string> russian)
{
    string h;
    int j;
    j = 0;
    double q = k;
    int f = ceil(n/q);
    for (int i = 1; i <= f; i++)
    {
        h = "";
        if (j != n-f*(k-1))
        {
            for (int p = 0; p < k; p++)
            {
                h += prom(russian[p*f + i-1]);
                h += russian[p*f + i-1];
            }
            j++;
        }
        else
        {
            for (int p = 0; p < k - 1; p++)
            {
                h += prom(russian[p*f + i - 1]);
                h += russian[p*f + i - 1];
            }
            h += "    ";
        }
        cout << h << endl;
    }
}
int main()
{
    long long n, k, l;
    vector <string> russian;
    string prom;

    cin >> n >> k;

    for (int i = 1; i <= n; i++)
    {
        cin >> l;
        prom = convertInt(l);
        russian.push_back(prom);
    }

    d(n, k, russian);

    _getch();
    return 0;
}