($n,$k)=glob<>;

$h{int$k}=1;

for$i(reverse 1..$n){
	%d=%h;
	for(keys%h){
		$a=int$_/$i;
		$d{$a}+=$h{$_} if$a;
	}
	%h=%d;
}

$t=0;
for(keys%h){
	$t+=$d{$_};
}

print $t-1;