#include<bits/stdc++.h>
namespace {
#pragma GCC diagnostic ignored "-Wunused-function"
#include<atcoder/all>
#pragma GCC diagnostic warning "-Wunused-function"
using namespace std;
using namespace atcoder;
#define rep(i,n) for(int i = 0; i < (int)(n); i++)
#define rrep(i,n) for(int i = (int)(n) - 1; i >= 0; i--)
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
template<class T> bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; } else return false; }
template<class T> bool chmin(T& a, const T& b) { if (b < a) { a = b; return true; } else return false; }
using ll = long long;
using P = pair<int,int>;
using VI = vector<int>;
using VVI = vector<VI>;
using VL = vector<ll>;
using VVL = vector<VL>;
using mint = modint998244353;

} int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int n;
  cin >> n;
  int n2 = bit_ceil(0U + n);
  int k = countr_zero(0U + n2);
  int f[30][2]{};
  for (int i = n; i < n2; i++) {
    rep(b, k) f[b][i >> b & 1]++;
  }
  mint ans;
  mint inv2 = mint(2).inv();
  rep(i, n) {
    int a;
    cin >> a;
    mint res = inv2 * n2 * (n2 - 1);
    rep(b, k) res -= ll(f[b][~i >> b & 1]) << b;
    ans += a * res;
  }
  cout << ans.val() << '\n';
}