Language: C++

#include <bits/stdc++.h>
using namespace std;
using namespace placeholders;
using ll = long long;

class sum_class{
	vector<ll> v;
public:
	sum_class(const vector<ll>& vv){
		v.resize(vv.size() + 1, 0);
		partial_sum(begin(vv), end(vv), begin(v) + 1); }
	ll operator()(const ll x, const ll y){
		return v[y+1] - v[x]; } };

int main(){
	ll n, k;
	cin >> n >> k;

	vector<ll> v(n);
	for(auto& x : v) cin >> x;

	vector<ll> pv(n);
	transform(begin(v), end(v), begin(pv), [](const ll x){ return max(x, 0); });

	sum_class sv(v), spv(pv);

	ll rez = accumulate(begin(v), end(v), 0);

	for(ll i = 0, j = k-1; j < n; ++i, ++j){
		rez = max(rez, spv(0, i-1) + max(sv(i, j), 0) + spv(j+1, n-1)); }
	
	cout << rez << endl;

	return 0; }


Compiler output:
a.cc: In lambda function:
a.cc:23:74: error: no matching function for call to 'max(const ll&, int)'
   23 |         transform(begin(v), end(v), begin(pv), [](const ll x){ return max(x, 0); });
      |                                                                       ~~~^~~~~~
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:23:74: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   23 |         transform(begin(v), end(v), begin(pv), [](const ll x){ return max(x, 0); });
      |                                                                       ~~~^~~~~~
/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:23:74: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   23 |         transform(begin(v), end(v), begin(pv), [](const ll x){ return max(x, 0); });
      |                                                                       ~~~^~~~~~
a.cc: In function 'int main()':
a.cc:30:49: error: no matching function for call to 'max(ll, int)'
   30 |                 rez = max(rez, spv(0, i-1) + max(sv(i, j), 0) + spv(j+1, n-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:30:49: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   30 |                 rez = max(rez, spv(0, i-1) + max(sv(i, j), 0) + spv(j+1, n-1)); }
      |                                              ~~~^~~~~~~~~~~~~
/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:30:49: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   30 |                 rez = max(rez, spv(0, i-1) + max(sv(i, j), 0) + spv(j+1, n-1)); }
      |                                              ~~~^~~~~~~~~~~~~