import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner userInput = new Scanner(System.in);
        String[] stringArray = userInput.nextLine().split(",");
        Integer[] integerArray = new Integer[stringArray.length];
        List<Integer> positiveInt = new ArrayList<>();
        List<Integer> equalsNull = new ArrayList<>();

        for (int i = 0; i < integerArray.length; i++) {
            integerArray[i] = Integer.parseInt(stringArray[i]);
        }
        for(Integer i: integerArray) {
            if(i > 0) {
                positiveInt.add(i);
            } else if(i == 0) {
                equalsNull.add(i);
            }
        }
        List<Integer> finalList = new ArrayList<>(positiveInt);
        finalList.addAll(equalsNull);
        System.out.println(finalList.toString().replaceAll("(^\\[|\\]$)", "").replaceAll("\\s", ""));
    }
}