#include <iostream>
#include <string>
#include "strutils.h"

using namespace std;

int max(string s)
{
	int index = 0, comma, prevcomma = -1, number, max = INT_MIN;

	comma = s.find(",");
	while ( comma != string::npos )
	{
		number = atoi(s.substr(prevcomma+1, comma));
		if ( number > max ) {
			max = number;
			index = prevcomma+1;
		}
		prevcomma = comma;
		comma = s.find(",", prevcomma+1);
	}

	return index;
}

int main()
{
	string current, s;
	int index, comma, length;

	cin >> s;
	while ( s.length() > 0 )
	{
		index = max(s);
		comma = s.find(",", index);
		cout << s.substr(index, comma-index) << ",";
		
		current = s;
		if (index > 0)
			s = s.substr(0, index);
		else
			s = "";
		
		if ( comma < current.length()-1 )
			s += current.substr(comma + 1, current.length());
	}

	return 0;
}