import sys

def calculate(m, n):
    if m==0 or n==1:
        return 1
    if n>m:
        return calculate(m, m)
    else:
        return calculate(m, n-1)+calculate(m-n, n)


for line in sys.stdin:
    p1, p2=line[:-1].split()
    m=int(p1)
    n=int(p2)
    print(calculate(m, n))