#include <iostream>
using namespace std;

int main() {
    int a, b, c, d;
    cin >> a >> b >> c >> d;
    if (a > b) {
        int aux = a;
        a = b;
        b = aux;
    }
    if (a > c) {
        int aux = a;
        a = c;
        c = aux;
    }
    if (a > d) {
        int aux = a;
        a = d;
        d = aux;
    }
    if (b > c) {
        int aux = b;
        b = c;
        c = aux;
    }
    if (b > d) {
        int aux = b;
        b = d;
        d = aux;
    }
    if (c > d) {
        int aux = c;
        c = d;
        d = aux;
    }
    cout << a << " " << b << " " << c << " " << d;
    return 0;
}