use proconio::input;

fn main() {
    input! {
        n: usize, mut k: usize,
    }

    for mut i in 6.. {
        let mut temp = i;
        while temp > 0 && temp % 8 != 6 {
            temp >>= 1;
        }
        if temp == 0 { continue; }
        k -= 1;
        if k == 0 {
            let mut ans = Vec::with_capacity(n);
            for _ in 0..n {
                ans.push(['A', 'M'][i & 1]);
                i >>= 1;
            }
            println!("{}", ans.iter().rev().collect::<String>());
            break;
        }
    }
}