#include <iostream>
#include <vector>
#include <math.h>

using namespace std;

int main()
{
    size_t number_count;
    cerr << "Enter number count:";
    cin >> number_count;
    vector<double> numbers(number_count);
    cerr << "Enter numbers";
    for (size_t i = 0; i < number_count; i++)
        cin >> numbers[i];
    size_t bin_count;
    cerr << "Enter bin count:";
    cin >> bin_count;
    if (bin_count == 0)
    {
        bin_count = sqrt(number_count);
        if (bin_count > 25)
        {
            bin_count = 1 + log2(number_count);
            cout << "After Sturges rule bin count is:" << bin_count << endl;
        }
        else
            cout << "After Empirical rule bin count is:" << bin_count << endl;
    }

    vector <size_t> bins(bin_count, 0);
    double min = numbers[0];
    double max = numbers[0];

    for (double number : numbers)
    {
        if (min > number)
            min = number;
        else if (max < number)
            max = number;
    }

    double bin_size = (max - min) / bin_count;
    for (size_t i = 0; i < number_count; i++)
    {
        bool found = false;
        for (size_t j = 0; j < (bin_count - 1) && !found; j++)
        {
            auto lo = min + j * bin_size;
            auto hi = min + (j + 1) * bin_size;
            if ((numbers[i] >= lo) && (numbers[i] < hi))
            {
                bins[j]++;
                found = true;
            }
        }
        if (!found)
        {
            bins[bin_count - 1]++;
        }
    }

    const size_t SCREEN_WIDTH = 80;
    const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;

    size_t max_bin = bins[0];
    for (size_t bin : bins)
        if (bin > max_bin)
            max_bin = bin;
    for (size_t bin : bins)
    {
        int height = bin;
        if (max_bin > MAX_ASTERISK)
        {
            height = MAX_ASTERISK * (static_cast<double>(bin) / max_bin);
        }
        if (bin < 100)
            cout << " ";
        if (bin < 10)
            cout << " ";
        cout << bin << "|";
        for (size_t i = 0; i < height; i++)
            cout << "*";
        cout << endl;
    }
    return 0;
}