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

SUM = 0
ans = []
for bit in range(1<<19):
    cnt = 0
    for i in reversed(range(19)):
        if 1<<i & bit:
            cnt += 1
        else:
            if 2 <= cnt:
                SUM += 1
                break
            cnt = 0
    if SUM == K:
        for i in reversed(range(19)):
            if 1<<i & bit:
                ans.append("M")
            else:
                ans.append("A")
        break

if N < 19:
    ans = ans[-N:]
elif 19 < N:
    ans = ["A"]*(N-19)+ans

print("".join(ans))