import java.util.*;
import java.util.regex.*;

public class P2895 {
    static String normalize(String s) {
        boolean neg = s.startsWith("-");
        String t = neg ? s.substring(1) : s;
        int i = 0;
        while (i < t.length() - 1 && t.charAt(i) == '0') i++;
        t = t.substring(i);
        if (t.equals("0")) neg = false;
        return neg ? ("-" + t) : t;
    }

    static int cmpNum(String a, String b) {
        boolean na = a.startsWith("-");
        boolean nb = b.startsWith("-");
        if (na != nb) return na ? -1 : 1;
        String aa = na ? a.substring(1) : a;
        String bb = nb ? b.substring(1) : b;
        if (!na) {
            if (aa.length() != bb.length()) return aa.length() < bb.length() ? -1 : 1;
            int c = aa.compareTo(bb);
            return c < 0 ? -1 : (c > 0 ? 1 : 0);
        } else {
            if (aa.length() != bb.length()) return aa.length() > bb.length() ? -1 : 1;
            int c = aa.compareTo(bb);
            return c > 0 ? -1 : (c < 0 ? 1 : 0);
        }
    }

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        StringBuilder input = new StringBuilder();
        while (in.hasNextLine()) {
            if (input.length() > 0) input.append('\n');
            input.append(in.nextLine());
        }
        Matcher m = Pattern.compile("-?\\d+").matcher(input.toString());
        List<String> nums = new ArrayList<>();
        while (m.find()) nums.add(normalize(m.group()));
        nums.sort(P2895::cmpNum);
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < nums.size(); i++) {
            if (i > 0) sb.append(',');
            sb.append(nums.get(i));
        }
        System.out.println(sb.toString());
        in.close();
    }
}