Language: C++

#ifdef __GNUC__
#pragma GCC target("avx2")
#pragma GCC optimize ("O20")
#pragma GCC optimize ("tree-vectorize")
#pragma GCC optimize("unroll-loops")
#define iss std::cin
#endif
#include "bits/stdc++.h"
#define rep(i, times) for(ll i = 0; i < (times); ++i)
#define p(x) (cout << x << "\n")
using ll = int_fast64_t; using namespace std;

#ifndef __GNUC__
string text =
R"X(1500 2000 500 90000 100000)X";
stringstream iss{text};
#endif

int main( ) {
	cin.tie(0);	ios::sync_with_stdio(0);
	ll A, B, C, X, Y; iss >> A >> B >> C >> X >> Y;
	ll bXY = max(X, Y) * 2 + 1;
	ll price{LLONG_MAX};
	rep(c, bXY) {
		ll a = max(X - c / 2, 0ll);
		ll b = max(Y - c / 2, 0ll);
		price = min(price, a * A + b * B + c * C);
	}
	p(price);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:25:27: error: no matching function for call to 'max(ll, long long int)'
   25 |                 ll a = max(X - c / 2, 0ll);
      |                        ~~~^~~~~~~~~~~~~~~~
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: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:25:27: note:   deduced conflicting types for parameter 'const _Tp' ('long int' and 'long long int')
   25 |                 ll a = max(X - c / 2, 0ll);
      |                        ~~~^~~~~~~~~~~~~~~~
/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:25:27: note:   mismatched types 'std::initializer_list<_Tp>' and 'long int'
   25 |                 ll a = max(X - c / 2, 0ll);
      |                        ~~~^~~~~~~~~~~~~~~~
a.cc:26:27: error: no matching function for call to 'max(ll, long long int)'
   26 |                 ll b = max(Y - c / 2, 0ll);
      |                        ~~~^~~~~~~~~~~~~~~~
/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:26:27: note:   deduced conflicting types for parameter 'const _Tp' ('long int' and 'long long int')
   26 |                 ll b = max(Y - c / 2, 0ll);
      |                        ~~~^~~~~~~~~~~~~~~~
/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:26:27: note:   mismatched types 'std::initializer_list<_Tp>' and 'long int'
   26 |                 ll b = max(Y - c / 2, 0ll);
      |                        ~~~^~~~~~~~~~~~~~~~