n, k = map(int, input().split())
k -= 1
SU = [("", 0)]
S = []
while SU:
    s, f = SU.pop()
    if f == -1:
        S.pop()
        continue
    S.append(s)
    if len(S) == n+1 and f:
        if k:
            k -= 1
        else:
            exit(print("".join(S)))
    elif len(S) == n+1:
        pass
    else:
        SU.append(("", -1))
        SU.append(("M", f))
        SU.append(("", -1))
        if len(S) >= 2 and S[-2] + S[-1] == "MM":
            SU.append(("A", 1))
        else:
            SU.append(("A", f))