use proconio::input;

const MOD: usize = 998_244_353;
fn main() {
    input! {
        n: usize,
    }

    if n % 2 == 1 {
        println!("0");
        return;
    }

    // dp[i][j] := 先頭から i + j 個が、 (: i個, ): j個
    let mut dp = vec![vec![0; n / 2 + 1]; n / 2 + 1];
    dp[0][0] = 1;
    for i in 0..=n / 2 {
        for j in 0..=n / 2 {
            if i < j || (i == 0 && j == 0) {
                continue;
            }
            dp[i][j] = if i > 0 { dp[i - 1][j] } else { 0 } + if j > 0 { dp[i][j - 1] } else { 0 };
            if dp[i][j] >= MOD {
                dp[i][j] -= MOD;
            }
        }
    }

    let mut ans = 0;
    for i in 0..=n / 2 {
        for j in 0..=n / 2 {
            if i <= j {
                continue;
            }
            ans += dp[i][j] * (i - j - 1) * dp[n / 2 - j][n / 2 - i];
            ans %= MOD;
        }
    }

    println!("{}", ans);
}