use proconio::input;

fn main () {
    input! {
        n: usize,
        mut a: [u128; n],
    }
    a.sort();
    let ans = a.iter().fold(0 as u128, |x, &v| {
        ((x*10) % 998244353 + v) % 998244353
    });
    println!("{}", ans);
}