Language: C++

#include                          <bits/stdc++.h>
#define     lli                   unsigned long long int
#define     ll                    long long int




long long   Bigmod(long long base, long long power, long long MOD) {long long ret = 1; while(power) {if(power & 1) ret = (ret*base)%MOD; base = (base*base)%MOD; power >>= 1;} return ret;}
bool        isVowel(char ch) {ch = toupper(ch); if(ch == 'A' || ch == 'U' || ch == 'I' || ch == 'O' || ch == 'E') return true; return false;}
long long   ModInverse(long long number, long long MOD) {return Bigmod(number, MOD-2, MOD);}
bool        isConst(char ch) {if(isalpha(ch) && !isVowel(ch)) return true; return false;}
int         toInt(string s)  {int si; stringstream ss(s); ss >> si; return si;}

int dx[8] = { 0,  0,  1  -1,  1,  1, -1, -1};
int dy[8] = { 1, -1,  0,  0,  1, -1,  1, -1};


//------------------- Let`s Start ------------------------ //


int main()
{
    timesave;

    int n, d, x, a;

    cin >> n;
    cin >> d >> x;

    int total = x;

    for(int i = 0; i < n; i++){
        cin >> a;

        total += (d-1) / a;
        total++;
    }

    cout << total << endl;

	return 0;
}

Compiler output:
a.cc:12:19: error: 'string' was not declared in this scope
   12 | int         toInt(string s)  {int si; stringstream ss(s); ss >> si; return si;}
      |                   ^~~~~~
a.cc:12:19: note: suggested alternatives:
In file included from /usr/include/c++/14/string:41,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:1:
/usr/include/c++/14/bits/stringfwd.h:77:33: note:   'std::string'
   77 |   typedef basic_string<char>    string;
      |                                 ^~~~~~
/usr/include/c++/14/string:76:11: note:   'std::pmr::string'
   76 |     using string    = basic_string<char>;
      |           ^~~~~~
a.cc: In function 'int main()':
a.cc:23:5: error: 'timesave' was not declared in this scope
   23 |     timesave;
      |     ^~~~~~~~
a.cc:27:5: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
   27 |     cin >> n;
      |     ^~~
      |     std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:39:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   39 |     cout << total << endl;
      |     ^~~~
      |     std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:39:22: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   39 |     cout << total << endl;
      |                      ^~~~
      |                      std::endl
In file included from /usr/include/c++/14/istream:41,
                 from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~