#include <cassert>
#include <cmath>
#include <algorithm>
#include <iostream>
#include <iomanip>
#include <limits.h>
#include <map>
#include <queue>
#include <set>
#include <string.h>
#include <vector>

using namespace std;
typedef long long ll;

const ll MOD = 998244353;

int main() {
  int N;
  cin >> N;
  vector<ll> A(N);
  ll sum = 0;

  for (int i = 0; i < N; ++i) {
    cin >> A[i];
    sum += A[i];
  }

  ll dp[N + 1][2 * sum + 1];
  memset(dp, 0, sizeof(dp));
  dp[0][sum] = 1;

  for (int i = 0; i < N; ++i) {
    ll a = A[i];

    for (int v = 0; v <= 2 * sum; ++v) {
      if (dp[i][v] == 0) continue;

      dp[i + 1][v - a] += dp[i][v];
      dp[i + 1][v + a] += dp[i][v];
    }
  }

  ll ans = 0;

  for (int v = 0; v <= 2 * sum; ++v) {
    ans += dp[N][v] * abs(v - sum);
    ans %= MOD;
  }

  cout << ans << endl;

  return 0;
}