题解 | #放苹果#

# -*-coding:utf-8-*-

def apdisk(m , n):
        if m < 0 or n < 0:
            return 0
        elif m == 1 or n == 1:
            return 1
        else:
            return apdisk(m , n - 1) + apdisk(m - n , n)


while True:
    try:
        input_m , input_n = map(int , input().split(" "))
        print(apdisk(input_m , input_n))
    except:
        break