#include <iostream>
#include <vector>

typedef long long ll;

ll single_dig(ll digit) {
  return digit + 1;
}

ll double_dig(ll digit) {
  return 9 - digit;
}

int main() {
  ll a;
  std::cin >> a;
  std::vector<int> digits;
  while (a) {
    digits.push_back(a % 10);
    a /= 10;
  }

  ll* total = new ll[digits.size() + 1];
  total[0] = 1;

  for (unsigned long i = 0; i < digits.size(); i++) {
    total[i + 1] = total[i] * single_dig(digits[i]);
    if (i > 0 && digits[i] == 1) {
      total[i + 1] += total[i - 1] * double_dig(digits[i - 1]);
    }
  }

  std::cout << total[digits.size()] << std::endl;
  return 0;
}