func_code_string: #include <bits/stdc++.h>   using namespace std;   void calcula(long long int n, long long int m, long long int r[10000],                long long int sumar[10000], long long int k, long long int p) {     priority_queue<long long int> q;     for (int i = 0; i < n; i++) q.push(r[i]);     for (int paso = 1; paso <= k; paso++) {       long long int x = q.top();       q.pop();       sumar[paso] = sumar[paso - 1] + x;       q.push(x - m * p);     }   }   long long int n, m, k, p;   long long int c[10000], r[10000];   long long int sumac[2000000], sumar[2000000];   int main() {     cin >> n >> m >> k >> p;     for (int i = 0; i < n; i++) {       for (int j = 0; j < m; j++) {         int a;         cin >> a;         r[i] += a;         c[j] += a;       }     }     calcula(n, m, r, sumar, k, p);     calcula(m, n, c, sumac, k, p);     long long int maximo = -1000000000000000000LL;     for (long long int kc = 0; kc <= k; kc++) {       long long int kr = k - kc;       maximo = max(maximo, sumar[kr] + sumac[kc] - p * kc * kr);     }     cout << maximo << endl;   }   