#include <iostream>
#include <stdio.h>
#include <vector>
#include <algorithm>
#include <set>

using namespace std;

using i64 = long long;

#define yn(pope) (pope ? "Yes" : "No")

#define rep(i, n, m) for (int i = (n); i < (m); i++)
#define rrep(i, n, m) for (int i = (n); i > m; i--)

#define IINF (1 << 30)
#define INF (1ll << 60)

#define all(v) v.begin(), v.end()

int main() {
  string s; cin >> s;
  set<string> S;

  rep(i, 0, s.length() + 1) {
    rep(j, 0, 10) {
      string t = s;
      t.insert(t.begin() + i, (char)('0' + j));

      S.insert(t);
    }
  }

  cout << S.size() - 1 << endl;

  return 0;
}