# Memo this bottom function
known = {}
def ack(m,n):
    if m in known:
        print(known[m])

    else:




        if m == 0:

            known[m] = n + 1
            print(n+1)


        elif m > 0 and n == 0: #j represents n value when adding to dic
            j = ack(m-1,1)
            known[m] = n
            print(ack(m-1,1))

        elif m > 0 and n > 0:
            j = ack(m-1, ack(m,n-1))
            known[m] = j
            print(ack(m-1, ack(m,n-1)))