#include <stdio.h>
int r,d,rez;
int e[5000005];
void calcul (int x)
{
    int y=x,nr=0;
    while (x)
    {
        nr+=x/d;
		x/=d;
    }
    e[y]=nr;
}
void check_prim (int n)
{
	int i;
    for (i=0; i<=n; ++i)
    {
        if (!e[r-i])
            calcul (r-i);
        if (!e[i])
            calcul (i);
        if (e[r]-e[r-i]-e[i]>0)
            rez+=2;
    }
}
int main ()
{
    freopen ("pascal.in","r",stdin);
    freopen ("pascal.out","w",stdout);
    scanf ("%d%d",&r,&d);
    calcul (r);
    if (r%2==1 && (d==2 || d==3 ||d==5))
        check_prim (r/2);
    else if (r%2==0 && (d==2 || d==3 ||d==5))
    {
        check_prim (r/2-1);
        if (!e[r/2])
            calcul (r/2);
        if (e[r]-2*e[r/2]>0)
            ++rez;
	}
	printf ("%d",rez);
	return 0;
}