#include <bits/stdc++.h>
using namespace std;

namespace bread {
struct mint {
    inline static int64_t mod = 998244353;
    mint() : v(0) {}
    mint(int64_t val) {v = val % mod; if(v < 0) v += mod;}
    mint& operator+=(const mint& r) {v += r.v; if(v >= mod) v -= mod; return *this;}
    mint& operator-=(const mint& r) {v -= r.v; if(v < 0) v += mod; return *this;}
    mint& operator*=(const mint& r) {v = v * r.v % mod; return *this;}
    mint& operator/=(const mint& r) {return *this *= r.inv();}
    mint operator-() const {return mint() - *this;}
    mint pow(int64_t n) const {assert(0 <= n); mint x = v, r = 1; while(n) {if(n & 1) r *= x; x *= x; n /= 2;} return r;}
    mint inv() const {assert(v); return pow(mod - 2);}
    friend mint operator+(const mint& l, const mint& r) {return mint(l) += r;}
    friend mint operator-(const mint& l, const mint& r) {return mint(l) -= r;}
    friend mint operator*(const mint& l, const mint& r) {return mint(l) *= r;}
    friend mint operator/(const mint& l, const mint& r) {return mint(l) /= r;}
    friend bool operator==(const mint& l, const mint& r) {return l.v == r.v;}
    friend bool operator!=(const mint& l, const mint& r) {return l.v != r.v;}
    friend bool operator<(const mint& l, const mint& r) {return l.v < r.v;}
    friend istream& operator>>(istream& is, mint& x) {int64_t v; is >> v; x = mint(v); return is;}
    friend ostream& operator<<(ostream& os, const mint& x) {return os << x.v;}
    private: int64_t v;
};
} using namespace bread;

#define int long long
#define rep(i, n) for(int i = 0; i < (int)(n); ++i)

int solve() {
    int N;
    cin >> N;
    vector<int> A(N);
    rep(i, N) cin >> A[i];
    
    mint ans = 0;
    rep(i, N) {
    	mint res = 0;
    	for(int j = 19; j >= 0; --j) {
    		int ij = (i >> j & 1), Nj = (N >> j & 1);
    		
    		if(Nj == 1) {
    			res += (1 << j) * ((1 << j) - 1) / 2;
    			res += (ij  << (j * 2));
    			res += ((ij ^ 1) << j) * (N & ((1 << j) - 1));
    		} else if(ij == 1) res += (N & ((1 << j) - 1)) * (ij << j);
    	}
    	
    	ans += res * A[i];
    }
    
    cout << ans << "\n";
    
    return 0;
}

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    
    int Testcases = 1;
    //cin >> Testcases;
    while(Testcases--) if(solve()) return 1;
    
    return 0;
}