use std::io::*;
const MOD: i64 = 998244353;
fn main() {
    let mut s: String = String::new();
    std::io::stdin().read_to_string(&mut s).ok();
    let mut itr = s.trim().split_whitespace();
    let n: usize = itr.next().unwrap().parse().unwrap();
    let a: Vec<i32> = (0..n)
        .map(|_| itr.next().unwrap().parse().unwrap())
        .collect();

    let S = n * 101;
    let mut dp: Vec<Vec<i64>> = vec![vec![0; S * 2]; n + 1];
    dp[0][S] = 1;
    for i in 0..n {
        for j in 0..S * 2 {
            let plus: i32 = j as i32 + a[i];
            let minus: i32 = j as i32 - a[i];
            if plus < S as i32 * 2 {
                dp[i + 1][plus as usize] += dp[i][j];
                dp[i + 1][plus as usize] %= MOD;
            }
            if 0 < minus {
                dp[i + 1][minus as usize] += dp[i][j];
                dp[i + 1][minus as usize] %= MOD;
            }
        }
    }

    let mut ans = 0i64;
    for i in 0..S * 2 {
        ans += dp[n][i] * (S as i64 - i as i64).abs() % MOD;
        ans %= MOD;
    }
    println!("{}", ans);
}