#include <iostream>
#include <vector>
#include <sstream>
#include <cstdlib>
#include "ctype.h"
using namespace std;

char join(char a, char b);
char join(int a, int b);
int main() {
    
    std::vector<char>letr;
    std::vector<int> numb;
    std::stringstream ss;
    std::string s;
    bool l =0;
    char a, b, forrige;
    int cnt=0;
    int  tip;
    while (getline(cin,s)){
        std::stringstream ss(s);
        
        while(ss >> a)
	    {
		if (isalpha(a)==1024)
		{
			letr.push_back(a);
			b=a;
			
		}
		
		if (isdigit(a)==1 && forrige == ',' || isdigit(a)==1 && forrige==':')
		{
			numb.push_back(a);	
			letr.push_back(b);
		}
		if(isdigit(forrige)==1 && isalpha(a)==0 && a != ',' && a!= ':'){
			numb.pop_back();
			numb.push_back(join(forrige,a));
		}
	     
           	forrige = a; 
		
            
            }
	letr.pop_back();
}

    

    for (int k=0;k<numb.size();k++){
        numb[k]= numb[k]-48;

    }



int len = numb.size(), maxi, i, tmp, tmp2;
	while(len>0)
	{
		maxi=0;
		for(i = 1; i<len; i++)
		{
			if (numb[i] > numb[maxi])
			{
				maxi = i;
			}
		}
		tmp2= letr[len-1];
		tmp = numb[len -1];
		letr[len-1]=letr[maxi];
		numb[len-1]=numb[maxi];
		letr[maxi]= tmp2;
		numb[maxi] = tmp;
		len--;
	}


	
	for(std::vector<char>::iterator l=letr.begin(); l!=letr.end(); l++)
	{
		cout << *l;
	}
	cout << endl;
return 0;

}
char join(int a, int b){
	return (a*10 +b);


}
char join(char a, char b)
{
	a=a-48;
	b=b-48;
	return (a*10 +b + 48);


}