using System.Linq;
using static System.Math;
using System.Collections.Generic;
using System;

public class P
{
    public string t { get; set; }
    public int p { get; set; }
}

public class Hello
{
    static void Main()
    {
        var s = Console.ReadLine().Trim();
        getAns(s);
    }
    static void getAns(string s)
    {
        var sL = s.Length;
        var aa = new List<long>();
        var q = new Queue<P>();
        var a = "";
        q.Enqueue(new P { t = a + s[0], p = 0 });
        q.Enqueue(new P { t = a + s[0] + ",", p = 0 });
        while (q.Count() > 0)
        {
            var w = q.Dequeue();
            if (w.p == sL-1)
            {
                string[] line = w.t.Split(',');
                var ww = Array.ConvertAll(line, long.Parse).Sum();
                aa.Add(ww);
                continue;
            }
            else
            {
                if (w.p == sL - 2)
                {
                    q.Enqueue(new P { t = w.t + s[w.p + 1], p = w.p + 1 });
                }
                else
                {
                    q.Enqueue(new P { t = w.t + s[w.p + 1], p = w.p + 1 });
                    q.Enqueue(new P { t = w.t + s[w.p + 1] + ",", p = w.p + 1 });
                }
            }
        }
        var count = 0;
        foreach(var x in aa) if (IsPrime(x)) count++;
        Console.WriteLine(count);
    }
    public static bool IsPrime(long n)
    {
        if (n < 2) return false;
        else if (n == 2) return true;
        else if (n % 2 == 0) return false;
        double sqrtNum = Sqrt(n);
        for (int i = 3; i <= sqrtNum; i += 2)
            if (n % i == 0) return false;
        return true;
    }

}