import sys

sys.setrecursionlimit(2*10**5)


def input(): return sys.stdin.readline().rstrip('\n')


def main():
    n, k = map(int, input().split())

    arr = []
    mma = 0

    def gen():
        nonlocal arr, k, mma
        if len(arr) == n:
            if mma > 0:
                k -= 1
            return ''.join(arr) if k == 0 else None

        mm = arr[-2:] == ['M', 'M']
        arr.append('A')
        if mm:
            mma += 1
        ans = gen()
        if ans is not None:
            return ans
        if mm:
            mma -= 1
        arr.pop()

        arr.append('M')
        ans = gen()
        if ans is not None:
            return ans
        arr.pop()
        return None

    print(gen())


if __name__ == '__main__':
    main()