func_code_string: #include <bits/stdc++.h>   using namespace std;   int mod = 998244353;   int main() {     ios_base ::sync_with_stdio(0);     cin.tie(0);     cout.tie(0);     int n;     cin >> n;     long long int fac[n + 1];     fac[0] = 1;     for (int i = 1; i <= n; i++) {       fac[i] = fac[i - 1] * i;       fac[i] %= mod;     }     long long int dp[n + 1];     dp[0] = 1;     for (int i = 1; i <= n; i++) {       dp[i] = (dp[i - 1] + fac[i - 1] - 1) * i;       dp[i] %= mod;     }     cout << dp[n] << endl;     return 0;   }   