import heapq

N,K = map(int,input().split())

cnt = 0
mma = 0

while cnt <= 10**9:

    f = format(cnt,"b")

    if "110" in f:
        mma += 1

    if mma == K:
        f.zfill(N)

        ans = [ "AM"[int(c)] for c in f ]
        print ("".join(ans))
        break

    cnt += 1