func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int x = 0, y, n, sol = 0, energy = 0;     cin >> n;     for (int i = 1; i <= n; ++i) {       cin >> y;       energy += x - y;       if (energy < 0) {         sol = sol - energy;         energy = 0;       }       x = y;     }     cout << sol;   }   