N = int(input())
A = list(map(int, input().split()))
mod = 998244353
geta = sum(A) + 5

pre = [0] * (geta * 2)
pre[geta] = 1
for i in range(N):
    dp = [0] * (geta * 2)
    for j in range(2 * geta):
        for k in range(-1, 2, 2):
            if 0 <= j + A[i] * k <= 2 * geta - 1:
                dp[j + A[i] * k] += pre[j]
                dp[j + A[i] * k] %= mod
    pre, dp = dp, pre
    
ans = 0
for i in range(2 * geta):
    ans += pre[i] * abs(geta - i)
    ans %= mod
print(ans)