#include <iostream>
#include <fstream>
using namespace std;

ifstream fin("pascal.in");
ofstream fout("pascal.out");
const int RMAX = 5000100;
short p2[RMAX], p3[RMAX], p5[RMAX];
int doi, trei, cinci;
int R, D, sol;

int main()
{
    fin >> R >> D;
    for (int i = 1; i <= R; i++)
    {
        if (i % 2 == 0)
        {
            p2[i] = p2[i / 2] + 1;
            p3[i] = p3[i / 2];
            p5[i] = p5[i / 2];
        }
        else
        if (i % 3 == 0)
        {
            p2[i] = p2[i / 3];
            p3[i] = p3[i / 3] + 1;
            p5[i] = p5[i / 3];
        }
        else
        if (i % 5 == 0)
        {
            p2[i] = p2[i / 5];
            p3[i] = p3[i / 5];
            p5[i] = p5[i / 5] + 1;
        }
    }

    for (int i = 1; i < R; i++)
    {
        doi = doi + p2[R - i + 1] - p2[i];
        trei = trei + p3[R - i + 1] - p3[i];
        cinci = cinci + p5[R - i + 1] - p5[i];
        if (D == 2 and doi > 0)
            sol++;
        else
        if (D == 3 and trei > 0)
            sol++;
        else
        if (D == 4 and doi > 1)
            sol++;
        else
        if (D == 5 and cinci > 0)
            sol++;
        else
        if (D == 6 and doi > 0 and trei > 0)
            sol++;
    }

    fout << sol << '\n';
    fin.close();
    fout.close();
    return 0;
}