func_code_string: #include <bits/stdc++.h>   using namespace std;   typedef pair<long long, long long> ll;   typedef vector<long long> vl;   typedef vector<ll> vll;   typedef vector<vl> vvl;   template <typename T>   ostream &operator<<(ostream &o, vector<T> v) {     if (v.size() > 0) o << v[0];     for (unsigned i = 1; i < v.size(); i++) o <<     << v[i];     return o <<    ;   }   template <typename U, typename V>   ostream &operator<<(ostream &o, pair<U, V> p) {     return o <<  (  << p.first <<  ,   << p.second <<  )  ;   }   template <typename T>   istream &operator>>(istream &in, vector<T> &v) {     for (unsigned i = 0; i < v.size(); i++) in >> v[i];     return in;   }   template <typename T>   istream &operator>>(istream &in, pair<T, T> &p) {     in >> p.first;     in >> p.second;     return in;   }   template <typename T>   ostream &operator<<(ostream &o, set<T> v) {     for (auto &it : v) o << it <<    ;     return o <<   n ;   }   template <typename T, typename U>   ostream &operator<<(ostream &o, map<T, U> v) {     for (auto &it : v) o << it <<    ;     return o <<   n ;   }   struct custom_hash {     static uint64_t splitmix64(uint64_t x) {       x += 0x9e3779b97f4a7c15;       x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;       x = (x ^ (x >> 27)) * 0x94d049bb133111eb;       return x ^ (x >> 31);     }     size_t operator()(uint64_t x) const {       static const uint64_t FIXED_RANDOM =           chrono::steady_clock::now().time_since_epoch().count();       return splitmix64(x + FIXED_RANDOM);     }   };   int main(int argc, char *argv[]) {     long long n, d;     cin >> n >> d;     vl a(n);     cin >> a;     long long m;     cin >> m;     sort((a).begin(), (a).end());     if (m <= n) {       long long res = 0;       for (long long i = (0); i < (long long)m; i++) res += a[i];       cout << res;     } else {       long long sum = accumulate((a).begin(), (a).end(), 0LL);       cout << sum - (m - n) * d;     }     return 0;   }   