import java.io.*; import java.util.*; public class Main { static final int MOD = 998244353; public static void main(String[] args) throws Exception { Scanner sc = new Scanner(); int n = sc.nextInt(); int[] current = new int[1]; current[0] = 1; int max = 0; for (int i = 0; i < n; i++) { int x = sc.nextInt(); int[] next = new int[max + x + 1]; for (int j = 0; j <= max; j++) { next[j + x] += current[j]; next[Math.abs(j - x)] += current[j]; } max += x; current = next; } long ans = 0; for (int i = 1; i < current.length; i++) { ans += (long)i * current[i] % MOD; ans %= MOD; } System.out.println(ans); } } class Scanner { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); StringTokenizer st = new StringTokenizer(""); StringBuilder sb = new StringBuilder(); public Scanner() throws Exception { } public int nextInt() throws Exception { return Integer.parseInt(next()); } public long nextLong() throws Exception { return Long.parseLong(next()); } public double nextDouble() throws Exception { return Double.parseDouble(next()); } public String next() throws Exception { while (!st.hasMoreTokens()) { st = new StringTokenizer(br.readLine()); } return st.nextToken(); } }