typedef long long ll;
typedef long double ld;
#include <bits/stdc++.h>
using namespace std;
#define int long long

const ll MOD = 998244353;

signed main(){
    ll n;
    std::cin >> n;
    vector<ll> a(n);
    for (int i = 0; i < n; i++) {
        std::cin >> a[i];
    }
    vector<vector<ll>> dp(n+1,vector<ll>(20010));
    dp[0][10000] = 1;
    
    for (int i = 0; i < n; i++) {
        for (int j = -10000; j <= 10000; j++) {
            if(j+10000-a[i]>=0)dp[i+1][j+10000] += dp[i][j+10000-a[i]];
            if(j+10000+a[i]<=20000)dp[i+1][j+10000] += dp[i][j+10000+a[i]];
            dp[i+1][j+10000]%=MOD;
        }
    }
    ll ans = 0;
    for (int i = -10000; i <= 10000; i++) {
        ans += (abs(i)+MOD)%MOD*dp[n][i+10000]%MOD;
        ans %= MOD;
    }
    std::cout << ans << std::endl;
}