#include <iostream>
#include <fstream>
#include <vector>
#include <string>
#include <algorithm>
//---------------------------
using namespace std;
//---------------------------
#define REP(i,n) for(int i = 0; i < (n); i++)
#define P(x) cout << (x) << "\n"
//---------------------------


int main(){
  std::ios::sync_with_stdio(false);
  std::cin.tie(0);



  string s;cin>>s;
  int t = s.size();
  vector<int> v;//string各文字のAscii
  for (int i = 0; i < t; i++) {
    char c = s[i];
    v.push_back(c);
  }

  int cnt[11] = {};
  REP(i,9){
    cnt[i+1] = count(v.begin(),v.end(),49+i);
  }
  int ans = 0;
  REP(i,9){
    ans += (i+1) * cnt[i + 1];
  }

  P(ans);

  return 0;
}