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#include <bits/stdc++.h>

using namespace std;

int main() {
#ifdef LOCAL
  freopen("input.txt", "r", stdin);
#endif
  ios::sync_with_stdio(false);
  cin.tie(0);
  long long n;
  cin >> n;
  vector<int> digits;
  while (n) {
    digits.push_back(n % 10);
    n /= 10;
  }
  int m = digits.size();
  vector<long long> dp(m + 1);
  dp[0] = 1;
  for (int i = 0; i < m; ++i) {
    dp[i + 1] += dp[i] * (digits[i] + 1);
    if (i < m - 1 && digits[i + 1] == 1) {
      dp[i + 2] += dp[i] * (9 - digits[i]);
    }
  }
  cout << dp[m] << "\n";
  return 0;
}