#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
#else
  #define Debug(...) void(0)
#endif
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

inline bool is_prime(ll n) {
  if (n < 2) return false;
  for (ll i = 2; i * i <= n; ++i) {
    if (n % i == 0) return false;
  }
  return true;
}

int main() {
  cin.tie(nullptr)->sync_with_stdio(false);
  string s;
  cin >> s;
  int ans = 0;
  rep(bit, 1 << (s.size() - 1)) {
    ll sum = 0;
    ll num = 0;
    rep(i, s.size()) {
      num = num * 10 + (s[i] - '0');
      if (bit & (1 << i)) sum += num, num = 0;
    }
    sum += num;
    if (is_prime(sum)) ++ans;
  }
  cout << ans << '\n';
  return 0;
}