import sys
input = lambda :sys.stdin.readline()[:-1]
ni = lambda :int(input())
na = lambda :list(map(int,input().split()))
yes = lambda :print("yes");Yes = lambda :print("Yes");YES = lambda : print("YES")
no = lambda :print("no");No = lambda :print("No");NO = lambda : print("NO")
#######################################################################


n, k = na()
def check(x):
    for i in range(n - 2):
        if x >> i & 1 == 0 and x >> (i + 1) & 1 and x >> (i + 2) & 1:
            return True
    return False

# 110 を含むもので辞書順 K 番目

# n - 3 >= 15 のとき

# 0...010110

ans = []

m = min(n, 19)
for i in range(1 << m):
    if check(i):
        ans.append(i)

# print(ans)
res = ans[k-1]


print("".join(["AM"[res >> i & 1] for i in range(n)][::-1]))