#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <iomanip>
#include <cmath>
#include <stdio.h>
#include <queue>
#include <deque>
#include <cstdio>
#include <set>
#include <map>
#include <bitset>
#include <stack>
#include <cctype>
using namespace std;
long long dp[110][20010] = {};
long long a[110];
long long mod = 998244353;
int main() {
	int n;
	cin >> n;
	dp[0][10000] = 1;
	for (int i = 0; i < n; i++) {
		cin >> a[i];
		for (int j = a[i]; j <= 20000 - a[i]; j++) {
			dp[i + 1][j - a[i]] += dp[i][j];
			dp[i + 1][j + a[i]] += dp[i][j];
			dp[i + 1][j + a[i]] %= mod;
			dp[i + 1][j - a[i]] %= mod;
		}
	}
	long long ans = 0;
	for (int i = 0; i <= 20000; i++) {
		ans += dp[n][i] * abs(i - 10000);
		ans %= mod;
	}
	cout << ans << endl;
}