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


int main() {
    ll N,a,mod,ans;
    vector<ll> v,dp,dp2;
    mod = 998244353;
    ans = 0;
    cin >> N;
    v = {};
    dp = {};
    for (int i=0;i<N;i++){
        cin >> a;
        v.push_back(a);
    }
    for(int i=0;i<=10001;i++){
        dp.push_back(0);
    }
    dp[0]=1;
    for (int i=0;i<N;i++){
        dp2 ={};
        for(int i=0;i<=10001;i++){
        dp2.push_back(0);
        }
        for(int j=0;j<=10001;j++){
            if(j+v[i]<=10000){
                dp2[j+v[i]] += dp[j];
                dp2[j+v[i]] %= mod;
            }
            dp2[abs(j-v[i])] += dp[j];
            dp2[abs(j-v[i])] %= mod;
        }
        dp = dp2;
    }
    for(int i=0;i<=10001;i++){
        ans += dp[i]*i;
        ans %= mod;
    }
    cout << ans << endl;
}