#include <iostream>

using namespace std;
using LL = long long;

constexpr int MOD = 998244353;

int dp[101][20001];

int main() {
    int N;
    cin >> N;

    dp[0][10000] = 1;
    for (int i = 1; i <= N; i++) {
        int A;
        cin >> A;
        for (int j = 0; j <= 20000; j++) {
            if (dp[i - 1][j]) {
                dp[i][j + A] += dp[i - 1][j];
                dp[i][j - A] += dp[i - 1][j];
            }
        }
    }

    LL ans = 0;
    for (int i = 0; i <= 20000; i++) {
        ans += abs(1L * (i - 10000) * dp[N][i]);
        ans %= MOD;
    }

    cout << ans << endl;
}