#include <iostream>
#include <algorithm>
using namespace std;

int main()
{
    int arr[4];
    for (int i = 0; i < 4; i++)
        cin >> arr[i];

    sort(arr, arr + 4);

    for (int i = 0; i < 4; i++)
        cout << arr[i] << " ";

    return 0;
}