#include <iostream>

using namespace std;

int main()
{
   int n, s = 0, q = 0, number,p = 0;
   cout<<"Introduceti un numar componentele caruia sunt numere naturale nenule: "<<endl;
   cin>>n;
   int b =n;
   while(b)
   {
       b = b/10;
       q++;

   }
    int*a = new int[q];
    int c = n;
    while(c)
    {   int k = 0;
        number = c%10;
        for(int i = 2;i<number;i++)
        {
            if(number%i==0)
                k++;
        }
          if(k==0)
           {
               a[p] = number;
               p++;
           }
        c=c/10;
    }
    for(int i =0;i<=p;i++)
    {   int r = 0;
        for(int j = i+1;j<=p;j++)
        {

            if(a[i] == a[j])
                r++;
        }
        if(r==0)
            s+=a[i];
    }

    cout<<s<<endl;
}