Language: C++

/**
 * code generated by JHelper
 * More info: https://github.com/AlexeyDmitriev/JHelper
 * @author
 */


#include <iostream>
#include <algorithm>
#include <vector>
#include <string>
#include <queue>
#include <map>
#include <set>
#include <functional>
#include <cmath>
#include <numeric>
#include <iterator>
#include <fstream>
#define SIZE 100005
#define MOD 1000000007

using namespace std;

class BK {
public:
    static void solve(std::istream& cin, std::ostream& cout) {
      int64_t k, t;
      cin >> k >> t;
      vector<int64_t> vec(t);
      for (int i = 0; i < t; ++i) {
        cin >> vec[i];
      }
      sort(vec.begin(), vec.end());
      int64_t max_vec = vec.back();
      vec.pop_back();
      int64_t sum = accumulate(vec.begin(), vec.end(), 0l);
      cout << max(max_vec - sum - 1, 0ll) << endl;
    }
};


int main() {
    BK solver;
    std::istream& in(std::cin);
    std::ostream& out(std::cout);
    solver.solve(in, out);
    return 0;
}


Compiler output:
a.cc: In static member function 'static void BK::solve(std::istream&, std::ostream&)':
a.cc:38:18: error: no matching function for call to 'max(int64_t, long long int)'
   38 |       cout << max(max_vec - sum - 1, 0ll) << endl;
      |               ~~~^~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/string:51,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:8:
/usr/include/c++/14/bits/stl_algobase.h:257:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note:   template argument deduction/substitution failed:
a.cc:38:18: note:   deduced conflicting types for parameter 'const _Tp' ('long int' and 'long long int')
   38 |       cout << max(max_vec - sum - 1, 0ll) << endl;
      |               ~~~^~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61,
                 from a.cc:9:
/usr/include/c++/14/bits/stl_algo.h:5706:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)'
 5706 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5706:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(initializer_list<_Tp>, _Compare)'
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5716:5: note:   template argument deduction/substitution failed:
a.cc:38:18: note:   mismatched types 'std::initializer_list<_Tp>' and 'long int'
   38 |       cout << max(max_vec - sum - 1, 0ll) << endl;
      |               ~~~^~~~~~~~~~~~~~~~~~~~~~~~