from sys import stdin
n, *a = map(int, stdin.read().split())
p = 998244353
largenum = n * max(a) + 1
maxind = largenum * 2
dp = [[0 for i in range(maxind + 1)] for j in range(n+1)]
dp[0][largenum] = 1

for i in range(n):
    for j in range(maxind + 1):
        if j >= a[i]:
            dp[i+1][j] = dp[i][j-a[i]]
        if j <= maxind - a[i]:
            dp[i+1][j] = (dp[i+1][j] + dp[i][j+a[i]]) % p

ans = 0
for i in range(maxind+1):
    ans = (ans + abs(i-largenum) * dp[n][i] % p) % p
print("{}".format(ans))