//#include<algorithm>
//using namespace std;
#include<stdio.h>

int r,d,sol;

int fact(int x,int y){
    int exp;
    
	for(exp=0; x; exp+=x/=y);
    return exp;}

void solve(){
    int i,s0,s1,x02,x12,x22,x03,x13,x23;
    
    scanf("%d%d",&r,&d);
    if(d==6){
        if(r%2==0){
            for(i=0; i<r/2; ++i){
                x02=fact(r,2);
                x12=fact(i,2);
                x22=fact(r-i,2);
                x03=fact(r,3);
                x13=fact(i,3);
				x23=fact(r-i,3);
				s0=x02-x12-x22;
				s1=x03-x13-x23;
				if(s0>0&&s1>0)
					sol+=2;}
            x02=fact(r,2);
            x12=fact(r/2,2);
			x22=fact(r/2,2);
            x03=fact(r,3);
            x13=fact(r/2,3);
			x23=fact(r/2,3);
            s0=x02-x12-x22;
            s1=x03-x13-x23;
			if(s0>0&&s1>0)
                ++sol;}
        else{
            for(i=0; i<=r/2; ++i){
                x02=fact(r,2);
                x12=fact(i,2);
                x22=fact(r-i,2);
                x03=fact(r,3);
                x13=fact(i,3);
                x23=fact(r-i,3);}
            s0=x02-x12-x22;
            s1=x03-x13-x23;
            if((s0>=0&&s1>0)||(s0>0&&s1>=0))
                sol+=2;}}
    printf("%d",sol);}
    
int main(){
    
    freopen("pascal.in","r",stdin);
    freopen("pascal.out","w",stdout);
    solve();
    return 0;}