using System;
using System.Collections.Generic;
using System.Linq;
using System.Numerics;
static public class Program
{
    //small
    static public void Main()
    {
        var max = BigInteger.Pow(10, 6);
        var S = readString(2).ValidateArray(x =>
        {
            var v = BigInteger.Parse(x);
            return 1 <= v && v <= max;
        });
        readEOF();
        var M = int.Parse(S[0]);
        var D = int.Parse(S[1]);
        var a = new int[5000];
        long ans = 0;
        for (int i = 1; i <= M; i++)
            a[i.ToString().Select(x => x - '0').Sum()]++;
        for (int i = 1; i <= D; i++)
            ans += a[i.ToString().Select(x => x - '0').Sum()];
        Console.WriteLine(ans);
    }
    static string[] readString(int n)
    {
        var s = Console.ReadLine().Split(' ');
        if (s.Length != n)
            throw new Exception(string.Format("invalid input, expected{0} actual{1}", n, s.Length));
        return s;
    }
    static void readEOF()
    {
        if (Console.In.Peek() >= 0)
            throw new Exception("invalid input too long input file");
    }

}
static public class Ex
{
    static public T[] ValidateArray<T>(this T[] input, Func<T, bool> f)
    {
        foreach (var x in input)
            if (!f(x))
                throw new Exception("invalid input");
        return input;
    }
}