#include<bits/stdc++.h>
using namespace std;

ifstream f("pascal.in");
ofstream g("pascal.out");

int v2[5000002],v3[5000002],v5[5000002];

int div_cu_d(int r2, int r3, int r5, int d)
{
    if(d==2)
        return r2>=1;
    if(d==3)
        return r3>=1;
    if(d==4)
        return r2>=2;
    if(d==5)
        return r5>=1;
    if(d==6)
        return r3>=1 && r2>=1;
    return 0;
}

int main()
{
    int r2=0,r3=0,r5=0,i,ans=0,r,d;
    f>>r>>d;
    for(i=1;i<=r;i++)
    {
        if(i%2==0)
            v2[i]=v2[i/2]+1;
        if(i%3==0)
            v3[i]=v3[i/3]+1;
        if(i%5==0)
            v5[i]=v5[i/5]+1;
    }
    for(i=0;i<=r;i++)
    {
        r2+=v2[r-i+1]-v2[i];
        r3+=v3[r-i+1]-v3[i];
        r5+=v5[r-i+1]-v5[i];
        ans+=div_cu_d(r2,r3,r5,d);
    }
    g<<ans;
    return 0;
}