import sys
input = sys.stdin.readline

mod = 998244353
N = int(input())
A = list(map(int, input().split()))
dp = [0] * (100*N+1)
dp[0] = 1
for a in A:
    ndp = [0] * (100*N+1)
    for i in range(100*N+1):
        if i + a <= 100*N:
            ndp[i+a] = (ndp[i+a] + dp[i]) % mod
        ndp[abs(i-a)] = (ndp[abs(i-a)] + dp[i]) % mod
    dp = ndp
ans = 0
for i in range(100*N+1):
    ans = (ans + dp[i] * i) % mod
print(ans)