#include<cstdio>

#include<cstring>

#include<cmath>

#include<stack>

#include<vector>

#include<string>

#include<iostream>

#include<algorithm>

using namespace std;

int x[];

int main()

{

    int a,b;

    int ans=;

    x[]=;

    x[]=;

    x[]=;

    x[]=;

    x[]=;

    x[]=;

    x[]=;

    x[]=;

    x[]=;

    x[]=;

    scanf("%d%d",&a,&b);

    for(int i=a;i<=b;i++)

    {

        int num=i;

        while(num)

        {

            ans=ans+x[num%];

            num=num/;

        }

    }

    printf("%d\n",ans);

    return ;

}