fn main() {
    let stdin = std::io::read_to_string(std::io::stdin()).unwrap();
    let mut stdin = stdin.split_ascii_whitespace();

    let a: String = stdin.next().unwrap().parse().unwrap();
    let b: String = stdin.next().unwrap().parse().unwrap();

    println!("{}", output(solve(a, b)));
}

fn solve(a: String, b: String) -> char {
    if a == b {
        'E'
    } else {
        match (&a[..], &b[..]) {
            ("0", _) | (_, "0") | ("1", _) | (_, "1") => 'S',
            _ => 'P',
        }
    }
}

fn output(ans: char) -> char {
    ans
}