func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios_base::sync_with_stdio(0);     cin.tie(0);     cout.tie(0);     int n, c, a;     cin >> n >> c;     vector<int> arr;     for (int i = 0; i < n; i++) {       cin >> a;       arr.push_back(a);     }     int maxx = 0;     for (int i = 0; i < n - 1; i++) {       maxx = max(maxx, arr[i] - arr[i + 1] - c);     }     cout << maxx;     return 0;   }   