#include "stdio.h"

long long k;
long long d;
long long i;
long long m=1;
long long nr=0;
int main()
{
	freopen("pascal.in","r",stdin);
	//freopen("pascal.out","w",stdout);
	scanf("%lld%lld",&k,&d);
	for(i=1;i<k/2;i++)
	{
		m*=(k-i+1)/i;
		if(m%d==0&&m>0)
			nr+=2;
	}
	m*=(k-k/2+1)/(k/2);
		if(m%d==0&&m>0)
			nr+=1;
	printf("%lld",nr);
	return 0;
}