#include <stdio.h>
#include <stdlib.h>
#define MAX(x,y) ((x)>(y)?(x):(y))
int vsote (int n, int m) {
	int r = 0;
	if (!n)
		return 1;
	for (int a = 1; a <= n; a++)
		for (int b = MAX(m, a); a*b <= n; b++)
			if (n-a*b >= 0)
				r += vsote(n-a*b, m);
	return r;
}
int main (void) {
	int n, m;
	scanf("%d %d\n", &n, &m);
	printf("%d\n", vsote(n, m));
}