题解 | #放苹果#

def f(m,n):
    if(m < 0) | (n < 0):
        return 0
    elif(m == 1) | (n == 1):
        return 1
    else:
        return f(m,n-1) + f(m-n,n)
while True:
    try:
        m,n=map(int,input().split())
        print(f(m,n))
    except:
        break