#pragma GCC optimize("O3")

#ifdef LOCAL
#include "algo/debug_ver3.hpp"
#else
#define debug(...)
#define debugArr(...)
#endif

#include <bits/stdc++.h>

using namespace std;

int main() {
	cin.tie(nullptr);
	ios::sync_with_stdio(false);

	long long const MOD = 998'244'353;

	int n;
	cin >> n;

	vector<int> a(n);
	for (int i = 0; i < n; ++i) cin >> a[i];
	sort(a.begin(), a.end());

	long long x = 0;
	for (int i = 0; i < n; ++i) x = (10 * x % MOD + a[i]) % MOD;

	cout << x << '\n';
}