using System;
using System.Collections.Generic;
using System.Collections;
using System.Linq;




namespace contest
{

    class contest
    {


        static void Main(string[] args)
        {


            //int n = int.Parse(Console.ReadLine());
            //var input = Console.ReadLine().Split().Select(int.Parse).ToArray();




            //var n = int.Parse(Console.ReadLine());
            //var input = Console.ReadLine().Split().Select(int.Parse).ToArray();


            long n = long.Parse(Console.ReadLine());

            long score = 0;

            var ch = new int[n.ToString().Length];
            var memo = new int[10];
            for(int i =0; i<n.ToString().Length; i++)
            {
                int tmp = (char)(n.ToString()[i]-'0');
                memo[tmp]++;
                ch[i] = memo[tmp];
            }


            var arr = n.ToString().ToArray();
            var list = new List<int>();
            var check = new bool[n.ToString().Length];
            for(int i = 9; i>=0; i--)
            {
                if ( memo[i]==0) continue;
                int tmp = 0;
                int target = i;
                if(target>0  )
                {
                    var mm = new int[3];
                    tmp += target;
                    
                    int ind = Array.IndexOf(arr,(char)(target+'0'));
                    if (check[ind]) continue;
                    var cp = arr.Skip(ind+1).Take(arr.Length - (ind + 1)).OrderByDescending(a => a).ToArray();
                    int cc = -1;
                    for(int k =0; k<cp.Length-1; k++)
                    {
                        int aa = cp[k] - '0';
                        if(target != aa && aa==cp[k+1]-'0' && memo[aa]>1)
                        {
                            cc = aa;
                            break;
                        }
                    }
                    if (cc < 0) continue;

                    mm[2] = ind;
                    //check[ind] = true;
                    for (int j = ind; j < arr.Length; j++)
                    {
                        int cur = arr[j]-'0';
                        if (cc != cur) continue;
                        if (!check[j]&&target!=cur && memo[cur] > 1 && ch[j] < memo[cur] && tmp.ToString().Length == 1)
                        {
                            tmp *= 10;
                            tmp += cur;
                            mm[0] = j;
                            //check[j] = true;
                        }
                        else if (!check[j]&& target!=cur&& tmp%10==cur&&memo[cur] > 1 && ch[j] <= memo[cur] && tmp.ToString().Length == 2)
                        {
                            tmp *= 10;
                            tmp += cur;
                            mm[1] = j;
                            //check[j] = true;
                        }

                        if (tmp.ToString().Length == 3) break;
                    }
                    if(tmp.ToString().Length==3)
                    {
                        list.Add(tmp);
                        check[mm[0]] = true;
                        check[mm[1]] = true;
                        check[mm[2]] = true;
                        memo[tmp/100]--;
                        memo[(tmp/10)%10]--;
                        memo[tmp%10]--;
                    }
                }
            }



            Console.WriteLine(list.Sum());


           



            //Console.WriteLine(score);


            //Console.Read();


        }

    }


}