#![allow(unused)]
use proconio::*;
use std::collections::*;

fn main() {
    input! {
        n: usize,
        mut a: [usize; n]
    }
    let modulo = 998244353;
    a.sort();
    let mut x = 0;
    for i in 0..n {
        x *= 10;
        x += a[i];
        x %= modulo;
    }
    println!("{x}")
}