#include<bits/stdc++.h>
namespace {
#pragma GCC diagnostic ignored "-Wunused-function"
#include<atcoder/all>
#pragma GCC diagnostic warning "-Wunused-function"
using namespace std;
using namespace atcoder;
#define rep(i,n) for(int i = 0; i < (int)(n); i++)
#define rrep(i,n) for(int i = (int)(n) - 1; i >= 0; i--)
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
template<class T> bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; } else return false; }
template<class T> bool chmin(T& a, const T& b) { if (b < a) { a = b; return true; } else return false; }
using ll = long long;
using P = pair<int,int>;
using VI = vector<int>;
using VVI = vector<VI>;
using VL = vector<ll>;
using VVL = vector<VL>;

} int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int n, k;
  cin >> n >> k;
  k--;
  VI a(n);
  int now = 0;
  auto f = [&](int i) {
    return i + 2 < n && a[i] && a[i+1] && !a[i+2];
  };
  while (!now || k) {
    if (now) k--;
    int i = n - 1;
    while (a[i]) i--;
    for (int j = max(0, i - 2); j < n; j++) now -= f(j);
    a[i] = 1;
    for (int j = i + 1; j < n; j++) a[j] = 0;
    for (int j = max(0, i - 2); j < n; j++) now += f(j);
  }
  rep(i, n) cout << "AM"[a[i]];
  cout << '\n';
}