fn main() {
    let mut ab = String::new();
    std::io::stdin().read_line(&mut ab).ok();
    let ab: Vec<i64> = ab.trim().split_whitespace().map(|i| i.parse().unwrap()).collect();
    let a = ab[0];
    let b = ab[1];

    if a == 0 || b == 0 {
        println!("0");
    } else if a.abs() % 10 == 0 && b.abs() % 10 == 0 {
        println!("{}", a * b / 10);
    } else if (a * b).abs() >= 100_000_000 {
        println!("E");
    } else {
        println!("{}", a * b);
    }
}