package main

import . "fmt"
import . "slices"
import . "os"
import bf "bufio"

func main() {
	rd:=bf.NewReader(Stdin)
	var n int
	Fscan(rd,&n)
	a:=make([]int64,n)
	for i:=range a {
		Fscan(rd,&a[i])
	}
	Sort(a)
	var x int64
	const m=998244353
	for _,v:=range a {
		x=x*10%m+v%m
		x%=m
	}
	Println(x)
}