#include<stdio.h>
#define N 5000001
long n,l=0,i,t=0,v[N],j;
int k;
int main()
{freopen("pascal.in","r",stdin);
freopen("pascal.out","w",stdout);
scanf("%ld%d\n",&n,&k);
v[0]=0;
for(i=1;i<=n;i++)
      {j=i;
      while(j%k==0)
              {t++;
              j/=k;}
      v[i]=v[i-1]+t;
      t=0;}
for(i=1;i<=n-1;i++)
if(v[n]>v[i]+v[n-i])
       l++;             
printf("%ld\n",l);
fclose(stdin);
fclose(stdout);
return 0;}