#include <iostream>
#include <cstdio>
#include <string>
#include <vector>
#include <set>
#include <map>
#include <algorithm>

using namespace std;

int main() {

  string N;
  long long score = 0;
  cin>>N;

  for(int i=9; 1<=i; i--){
    for(int l=0; l<N.size(); l++){

      if(N[l] == i  + ('0' - 0)){

        for(int j = 0; j<=9; j++){
          if(i == j) continue;
          int cnt = 0, index[2];
          bool flag = false;
          for(int r=N.size()-1; l<r; r--){
            if(N[r] == j + ('0' - 0)){
              index[cnt] = r;
              cnt++;
              if(cnt == 2){
                  N[l] = '*';
                  N[index[0]] = '*';
                  N[index[1]] = '*';
                  score += 100*i + 10*j + j;
                  flag = true;
                  break;
              }
            }
          }
          if(flag) break;
        }

      }

    }
  }

  cout<<score<<endl;

  return 0;
}