typedef long long ll;
typedef long double ld;
#include <bits/stdc++.h>
using namespace std;
#define int long long

bool is_prime(long long n) {
    if (n <= 1) return false;
    for (long long p = 2; p * p <= n; ++p) {
        if (n % p == 0) return false;
    }
    return true;
}

signed main(){
    string s;
    std::cin >> s;
    ll n = s.size();
    ll ans = 0;
    for (int i = 0; i < (1<<(n-1)); i++) {
        ll sum = 0;
        string now = s.substr(0,1);
        for (int j = 0; j < n-1; j++) {
            if(i>>j&1){
                sum += stoll(now);
                now = s.substr(j+1,1);
            }else{
                now += s.substr(j+1,1);
            }
        }
        sum += stoll(now);
        if(is_prime(sum)){
            ans++;
        }
    }
    std::cout << ans << std::endl;
}