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#include <iostream>

using namespace std;

int main()
{
    long long int a,b,i1,r,wynik=0;
    cin>>a>>b;
    for (long long int i=a;i<=b;i++)
    {
        i1=i;
        while (i1>0)
        {
            r=i1%10;
            i1=i1/10;
            if(r==0) {
                i1=-1;
            }
            else if (i%r!=0) {
                i1=-1;
            }
        }
        if (i1==0) {
            wynik++;
        }
    }
    cout<<wynik;
    return 0;
}