#include<stdio.h>
long long int r,d,q2,q3,q5,up,down,cont,i;
int main()
{
	FILE *f,*g;
	f=fopen("pascal.in","r");
	g=fopen("pascal.out","w");
	fscanf(f,"%lld%lld",&r,&d);
	if(d==2)
	{ for(i=1;i<=r-1;i++)
	   {up=r+1-i;down=i;
	    while(up%2==0){q2++;up/=2;}
	    while(down%2==0){q2--;down/=2;}
	   }
	   if(q2>=1)cont++;
	}
	if(d==3)
	{ for(i=1;i<=r-1;i++)
	   {up=r+1-i;down=i;
	    while(up%3==0){q3++;up/=3;}
	    while(down%3==0){q3--;down/=3;}
	   }
	  if(q3>=1) cont++;
	}
	if(d==4)
	{ for(i=1;i<=r-1;i++)
	   {up=r+1-i;down=i;
	    while(up%2==0){q2++;up/=2;}
	    while(down%2==0){q2--;down/=2;}
	   }
	 if(q2>=2) cont++;
	}
	if(d==5) 
	{ for(i=1;i<=r-1;i++)
	   {up=r+1-i;down=i;
	    while(up%5==0){q5++;up/=5;}
	    while(down%5==0){q5--;down/=5;}
	   }
	  if(q5>=1) cont++;
	 }
	if(d==6)
	{ for(i=1;i<=r-1;i++)
	   {up=r+1-i;down=i;
	    while(up%2==0){q2++;up/=2;}
	    while(down%2==0){q2--;down/=2;}
	    while(up%3==0){q3++;up/=3;}
	    while(down%3==0){q3--;down/=3;}
	   }
	 if((q2>=1)&&(q3>=1))cont++;
	}
	fprintf(g,"%lld\n",cont);
	fcloseall();
	return 0;
}