func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long n, k;     cin >> n >> k;     vector<long long> v, v1;     map<long long, long long> m;     for (long long i = 0; i < n; i++) {       long long a;       cin >> a;       v.push_back(a);     }     long long a, c = 0;     cin >> a;     for (long long i = 0; i < n; i++)       if (v[i] > ((i + 1) * a + k)) c = -1;     long long val = k;     for (int i = 0; i < n; i++) {       int a;       cin >> a;       v1.push_back(a);     }     long long sum = 0;     if (c == 0) {       for (long long i = 0; i < n; i++) {         m[v1[i]]++;         auto itr = m.begin();         while (v[i] > val && itr != m.end()) {           if (itr->second == 0 && itr != m.end()) {             auto itr1 = itr;             itr1++;             m.erase(itr->first);             itr = m.find(itr1->first);           } else {             val += a;             sum += itr->first;             (itr->second)--;           }         }       }       cout << sum <<   n ;     } else       cout <<  -1             <<   n ;   }   