#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using ll = long long;
using ld = long double;
using ull = unsigned long long;
using vi = vector<ll>;
using vvi = vector<vi>;
using vc = vector<char>;
using vvc = vector<vc>;
using vb = vector<bool>;
using vvb = vector<vb>;
using vs = vector<string>;
using pii = pair<ll, ll>;
using vpii = vector<pii>;
using vvpii = vector<vpii>;
using mint = modint998244353;
// using mint = modint1000000007;
#define endl '\n'
#define rep(i, a) for (ll i = 0; i < a; i++)
#define f(i, a, b) for (ll i = a; i < b; i++)
#define rf(i, a, b) for (ll i = a; i > b; i--)
#define all(x) (x).begin(), (x).end()
const ll INF = LLONG_MAX / 4;
vi dx = {1, 0, -1, 0, 1, 1, -1, -1};
vi dy = {0, 1, 0, -1, 1, -1, 1, -1};
void io_setup() {
    cin.tie(0);
    ios::sync_with_stdio(0);
    cout << fixed << setprecision(16);
}

int main(void) {
    io_setup();
    int n, k;
    cin >> n >> k;
    int cnt = 0;
    rep(bit, 2e6) {
        rep(i, 21) {
                if(!(bit&(1<<i)) && (bit&(1<<(i+1))) && (bit&(1<<(i+2)))){
                	cnt++;
                	break;
                }
        }
        if (cnt == k) {
            rep(i, n) {
                if (bit & (1 << (n - i - 1))) cout << 'M';
                else cout << 'A';
            }cout << endl;
            return 0;
        }
    }
}