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

cnt = 0
for i in range(2 ** (N-1), 2** N):
    S = bin(i)[2:].replace('0', 'A').replace('1', 'M')
    if S.find('MMA') != -1:
        cnt += 1
    if cnt is K:
        print(S)
        break