mod = 998244353
eps = 10**-9


def main():
    import sys
    input = sys.stdin.readline

    N = int(input())
    A = list(map(int, input().split()))

    dp = [[0] * (2 * 10 ** 4 + 3) for _ in range(N+1)]
    dp[0][0] = 1
    for i in range(N):
        a = A[i]
        for j in range(-10**4, 10**4+1):
            if j - a >= -10**4:
                dp[i+1][j - a] = (dp[i+1][j - a] + dp[i][j])%mod
            if a + j <= 10**4:
                dp[i+1][a + j] = (dp[i+1][a + j] + dp[i][j])%mod
    ans = 0
    for j in range(-10**4, 10**4 + 1):
        ans = (ans + (abs(j) * dp[-1][j])%mod)%mod
    print(ans)


if __name__ == '__main__':
    main()