#define _USE_MATH_DEFINES
#include<iostream>
#include<vector>
#include<algorithm>
#include<cmath>
#include<string>
#include<iomanip>
#include<numeric>
#include<queue>
#include<deque>
#include<stack>
#include<set>
#include<map>
#include<random>
#include<bitset>
#include<cassert>
#include<complex>
#include<fstream>
#include<cstdlib>
#include<functional>
#include<array>
using namespace std;
typedef long long ll;
const int mod=998244353;
const int dx[]={1,0,0,-1},dy[]={0,1,-1,0};
int n,a[200000],sum[200001],pow2[200000];
map<pair<int,int>,int>mp;
int rec(int i,int s){
	if(s>sum[i])
		return 0;
	if(s<=0)
		return pow2[i];
	if(i==0)
		return 0;
	return mp[{i,s}]=rec(i-1,s)+rec(i-1,s-a[i-1]);
}
int main(){
	cin>>n;
	pow2[0]=1;
	for(int i=0;i<n;i++){
		cin>>a[i];
		sum[i+1]=sum[i]+a[i];
		pow2[i+1]=pow2[i]*2%mod;
	}
	int ans=(ll)pow2[n-1]*sum[n]%mod;
	ans=(ans+996858077ll*rec(n,999630629))%mod;
	cout<<ans<<endl;
}