#include <iostream>

using namespace std;

int main()
{
    setlocale(LC_ALL, "RUS");
    int const n = 4;
    int arr[n];

    int buf;

    for (int i = 0; i < n; i++)
    {
        cin >> arr[i];
    }

    for (int i = 0; i < n - 1; i++)
    {
        for (int j = 0; j < n - i - 1; j++)
        {
            if (arr[j] > arr[j + 1])
            {
                buf = arr[j];
                arr[j] = arr[j + 1];
                arr[j + 1] = buf;
            }
        }
    }

    for (int i = 0; i < n; i++)
    {
        cout << arr[i] << " ";
    }
}