#include <stdio.h>
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
using mint = modint998244353;
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf32 1000000001
#define Inf64 1000000000000000001

int main(){
	
	int n;
	cin>>n;
	vector<long long> a(n);
	rep(i,n)cin>>a[i];
	sort(a.begin(),a.end());
	mint ans = 0;
	rep(i,n){
		ans *= 10;
		ans += a[i];
	}
	cout<<ans.val()<<endl;
	
	return 0;
}