#include <bits/stdc++.h>

typedef long long LL;

const int N = 2e5 + 7;
const int MOD = 998244353;

int n, m;

int main() {

  scanf("%d", &n);

  std::vector<LL> a(n);
  for(LL &v: a)
    scanf("%lld", &v);

  std::sort(a.begin(), a.end());

  int x = 0;
  for(LL v: a)
    x = (10LL * x + v) % MOD;

  printf("%d\n", x);
  
  return 0;

}