Language: C++

#include <bits/stdc++.h>
using namespace std;

int N, K;
int A[100001];
long long res;
long long around, center;

int main() {
  cin >> N >> K;
  for(int i = 0; i < N; ++i) cin >> A[i];
  for(int i = K; i < N; ++i) around += max(0LL, A[i]);
  for(int i = 0; i < K; ++i) center += A[i];
  for(int i = 0; i < N - K; ++i) {
    res = max(res, around + max(0LL, center));
    center -= A[i]; center += A[i + K];
    around += max(0LL, A[i]); around -= max(0LL, A[i + K]);
  }
  cout << res << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:43: error: no matching function for call to 'max(long long int, int&)'
   12 |   for(int i = K; i < N; ++i) around += max(0LL, A[i]);
      |                                        ~~~^~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/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:12:43: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   12 |   for(int i = K; i < N; ++i) around += max(0LL, A[i]);
      |                                        ~~~^~~~~~~~~~~
/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:
/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:12:43: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   12 |   for(int i = K; i < N; ++i) around += max(0LL, A[i]);
      |                                        ~~~^~~~~~~~~~~
a.cc:17:18: error: no matching function for call to 'max(long long int, int&)'
   17 |     around += max(0LL, A[i]); around -= max(0LL, A[i + K]);
      |               ~~~^~~~~~~~~~~
/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:17:18: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   17 |     around += max(0LL, A[i]); around -= max(0LL, A[i + K]);
      |               ~~~^~~~~~~~~~~
/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
/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:17:18: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   17 |     around += max(0LL, A[i]); around -= max(0LL, A[i + K]);
      |               ~~~^~~~~~~~~~~
a.cc:17:44: error: no matching function for call to 'max(long long int, int&)'
   17 |     around += max(0LL, A[i]); around -= max(0LL, A[i + K]);
      |                                         ~~~^~~~~~~~~~~~~~~
/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:17:44: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   17 |     around += max(0LL, A[i]); around -= max(0LL, A[i + K]);
      |                                         ~~~^~~~~~~~~~~~~~~
/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
/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:17:44: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   17 |     around += max(0LL, A[i]); around -= max(0LL, A[i + K]);
      |                                         ~~~^~~~~~~~~~~~~~~