#include <bits/stdc++.h>

using namespace std;

using ll = long long;
using ull = unsigned long long;

const int INF = 2e9;
const ll LINF = 2e18;

#define rep(i, n) for (int i = 0; (i) < (n); (i)++)
#define rep1(i, n) for (int i = 1; (i) < ((n) + 1); (i)++)
#define all(a) (a).begin(), (a).end()

const int dx[] = {-1,0,1,0};
const int dy[] = {0,1,0,-1};

int main(){
  ll N,K;
  cin>>N>>K;
  ll t = 0;
  ll cnt = 0;
  while(cnt != K){
    t++;
    ll s = t;
    while(s){
      if(s % 8 == 6){
        cnt++;
        break;
      }
      s >>= 1;
    }
  }

  string ans = "";
  rep(i,N){
    if(t % 2 == 1){
      ans += "M";
    } else {
      ans += "A";
    }
    t >>= 1;
  }
  reverse(all(ans));
  cout<<ans<<endl;
}