//
//
//  Codeforces: ganariya
//  AtCoder: ganariya2525
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//include
//------------------------------------------
#include <vector>
#include <list>
#include <map>
#include <unordered_map>
#include <climits>
#include <set>
#include <unordered_set>
#include <deque>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <cctype>
#include <string>
#include <cstring>
#include <ctime>
#include <queue>
#include <random>
#include <complex>
#include <regex>
#include <locale>
#include <random>
#include <type_traits>

using namespace std;

#define SHOW_VECTOR(v) {std::cerr << #v << "\t:";for(const auto& xxx : v){std::cerr << xxx << " ";}std::cerr << "\n";}
#define SHOW_MAP(v){std::cerr << #v << endl; for(const auto& xxx: v){std::cerr << xxx.first << " " << xxx.second << "\n";}}

using LL = long long;

//~~~~~~~~~~~~~~~~~~~~~_(＾～＾ ｣ ∠)_~~~~~~~~~~~~~~~~~~~~~

constexpr int MAX_A = 90500;
constexpr LL mod = 998244353LL;

int main() {

    int N;
    cin >> N;

    vector<int> a(N);
    for (int i = 0; i < N; i++) cin >> a[i];

    LL sum = accumulate(a.begin(), a.end(), 0LL);

    LL ans = 1;
    for (int i = 0; i < N; i++) {
        ans *= 3LL;
        ans %= mod;
    }

    //dp[i][j]
    //[0, i)までの要素で、Rの合計をjとする組み合わせ
    vector<vector<LL>> dp(N + 1, vector<LL>(MAX_A, 0));
    dp[0][0] = 1;

    for (int i = 0; i < N; i++) {
        for (int j = 0; j <= MAX_A - 310; j++) {
            //if R
            dp[i + 1][j + a[i]] += dp[i][j];
            dp[i + 1][j + a[i]] %= mod;

            //if G B
            dp[i + 1][j] += 2 * dp[i][j];
            dp[i + 1][j] %= mod;
        }
    }


    for (int i = (sum + 1) / 2; i <= MAX_A - 310; i++) {
        ans = (ans - (dp[N][i] * 3) % mod + mod) % mod;
    }

    //dp[i][j]
    //[0, i)までの要素で、Rの合計をj, Bの合計をjとする組み合わせ
    vector<vector<LL>> same_dp(N + 1, vector<LL>(MAX_A, 0));
    same_dp[0][0] = 1;
    for (int i = 0; i < N; i++) {
        for (int j = 0; j <= MAX_A - 310; j++) {
            // if R
            same_dp[i + 1][j + a[i]] += same_dp[i][j];
            same_dp[i + 1][j + a[i]] %= mod;

            // if B
            same_dp[i + 1][j] += same_dp[i][j];
            same_dp[i + 1][j] %= mod;
        }
    }

    if (sum % 2 == 0) {
        ans = (ans + (same_dp[N][sum / 2] * 3) % mod + mod) % mod;
    }


    cout << ans << endl;

}






































Measured memory_bytes: 426940