#include<fstream>
using namespace std;
ifstream F("pascal.in");
ofstream G("pascal.out");
int p,q,r,d,s,i,j,k;
int main()
{
    F>>r>>d;
    if(d==2||d==3||d==5)
		for(i=1;i<=r/2;++i) {
			for(j=r-i+1;j%d==0;++p,j/=d);
			for(k=i;k%d==0;--p,k/=d);
			s+=!!(p);
		}
	else if(d==4)
		for(i=1;i<=r/2;++i) {
			for(j=r-i+1;j%2==0;++p,j/=2);
			for(k=i;k%2==0;--p,k/=2);
			s+=!!(p>>1);
		}
	else if(d==6)
		for(i=1;i<=r/2;++i) {
			for(j=r-i+1;j%2==0;++p,j/=2);
			for(k=i;k%2==0;--p,k/=2);
			for(j=r-i+1;j%3==0;++q,j/=3);
			for(k=i;k%3==0;--q,k/=3);
			s+=!!p&&!!q;
		}
    if(s&&!(r&1))
		s=(s<<1)-1;
	else
		s<<=1;
    G<<s;
    return 0;
}