#include <stdio.h>
#include <stdlib.h>

const int Mod = 998244353;

int main()
{
	int i, N, A[101];
	scanf("%d", &N);
	for (i = 1; i <= N; i++) scanf("%d", &(A[i]));
	
	int j, k;
	long long dp[10001] = {1}, tmp[10001];
	for (i = 1; i <= N; i++) {
		for (j = 0; j <= i * 100; j++) tmp[j] = 0;
		for (j = (i - 1) * 100; j >= 0; j--) {
			k = j + A[i];
			tmp[k] += dp[j];
			k = abs(j - A[i]);
			tmp[k] += dp[j];
		}
		for (j = 0; j <= i * 100; j++) dp[j] = tmp[j] % Mod;
	}
	
	long long ans = 0;
	for (i = 1; i <= N * 100; i++) ans += dp[i] * i;
	printf("%lld\n", ans % Mod);
	fflush(stdout);
	return 0;
}