#include <stdio.h>
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
using mint = modint998244353;
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf 1000000001


int main(){
	
	vector<mint> dp(20005,0);
	int c = 10002;
	dp[c] = 1;
	int n;
	cin>>n;
	
	rep(_,n){
		vector<mint> ndp(20005,0);
		int a;
		cin>>a;
		rep(j,dp.size()){
			if(dp[j]==0)continue;
			if(j-a>=0){
				ndp[j-a] += dp[j];
			}
			if(j+a<dp.size()){
				ndp[j+a] += dp[j];
			}
		}
		swap(dp,ndp);
	}
	
	mint ans = 0;
	
	rep(i,dp.size()){
		ans += dp[i] * abs(i-c);
	}
	
	cout<<ans.val()<<endl;
	
	return 0;
}