import java.io.*; import java.util.*; import java.util.stream.*; 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 base = 100 * n + 10; int[][] dp = new int[n + 1][base * 2]; int max = 0; dp[0][base] = 1; for (int i = 1; i <= n; i++) { int x = sc.nextInt(); for (int j = base - max; j <= base + max; j++) { dp[i][j + x] += dp[i - 1][j]; dp[i][j + x] %= MOD; dp[i][j - x] += dp[i - 1][j]; dp[i][j - x] %= MOD; } max += x; } long ans = 0; for (int i = 0; i < dp[n].length; i++) { ans += (long)dp[n][i] * Math.abs(i - base) % MOD; ans %= MOD; } System.out.println(ans); } } class Utilities { static String arrayToLineString(Object[] arr) { return Arrays.stream(arr).map(x -> x.toString()).collect(Collectors.joining("\n")); } static String arrayToLineString(int[] arr) { return String.join("\n", Arrays.stream(arr).mapToObj(String::valueOf).toArray(String[]::new)); } } 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 int[] nextIntArray() throws Exception { return Stream.of(br.readLine().split(" ")).mapToInt(Integer::parseInt).toArray(); } public String next() throws Exception { while (!st.hasMoreTokens()) { st = new StringTokenizer(br.readLine()); } return st.nextToken(); } }