#include <fstream>
#include <vector>
#define ciframaxima 8
using namespace std;
ifstream in ("cifre.in");
ofstream out ("cifre.out");
int V,s,nr,s1;
long long c;
long long n;
int main()
{
    in>>V;
    in>>n;
    if(V==1)
    {
    while(n>0)
    {
        c=n%10;
        switch(c)
        {
            case 1:
            nr=2;
            s=s+nr;
            break;
            case 2:
            nr=5;
            s=s+nr;
            break;
            case 3: nr=5;
            s=s+nr;
            break;
            case 4: nr=3;
            s=s+nr;
            break;
            case 5: nr=5;
            s=s+nr;
            break;
            case 6: nr=6;
            s=s+nr;
            break;
            case 7: nr=3;
            s=s+nr;
            break;
            case 8: nr=7;
            s=s+nr;
                break;
            case 9: nr=6;
            s=s+nr;
                break;
        }
        n=n/10;

    }
    }
    if(V==2)
    {

    }
    switch(V)
    {
    case 1:
        out<<s;
        break;
    case 2:
        out<<ciframaxima;
        break;
    }
    return 0;
}