use std::io::Read; fn main() { let mut s = String::new(); std::io::stdin().read_to_string(&mut s).ok(); let mut v: Vec = s.split_whitespace().skip(1).flat_map(str::parse).collect(); v.sort(); println!("{}", v.iter().fold(0, |a, &x| (10 * a + x) % 998244353)) }