func main()
	var n: int :: cui@inputInt()
	var k: int :: cui@inputInt()
	if(k = 1)
		do cui@print("\{n - 1}\n")
		ret
	end if
	var i: int :: 2
	var a: []int :: #[n + 1]int
	while loop(i * i <= n)
		if(math@prime(i))
			var x: int :: i
			while(x <= n)
				do a[x] :+ 1
				do x :+ i
			end while
		end if
		do i :+ 1
	end while
	
	var ans: int :: 0
	for j(2, n)
		if(a[j] >= k)
			do ans :+ 1
		end if
	end for
	do cui@print("\{ans}\n")
end func