N,K=map(int,input().split())
ans=""
lim= 30
if N>=lim:
    ans+="A"*(N-lim)
    N=lim
lim = min(lim,N)
cnt = 0
for i in range(2**lim):
    ans_d =0
    s = []
    for j in range(lim):
        if (1<<j)&i:
            s.append("M")
        else:
            s.append("A")
    s = s[::-1]
    if "MMA" in "".join(s):
        cnt += 1
        if cnt == K:
            print(ans+"".join(s))
            exit()