Language: C++

#include <bits/stdc++.h>
#define ll long long
#define rep(X,N) for(ll X = 0; X < N; X++)
#define PI (acos(-1.0))

using namespace std;

int main(){

    int a,b,c,x,y;

    cin >> a >> b >> c >> x >> y;

    x = x * 2;
    y = y * 2;

    ll ans = LLONG_MAX;

    rep(i,max(x,y)){

        ll needx = max(0,(x - i + 1) / 2);
        ll needy = max(0,(y - i + 1) / 2);

        ans = min(ans, needx * a + needy * b + i * c);
    }

    cout << ans << endl;
 
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:21:23: error: no matching function for call to 'max(int, long long int)'
   21 |         ll needx = max(0,(x - i + 1) / 2);
      |                    ~~~^~~~~~~~~~~~~~~~~~~
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:21:23: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   21 |         ll needx = max(0,(x - i + 1) / 2);
      |                    ~~~^~~~~~~~~~~~~~~~~~~
/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:21:23: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   21 |         ll needx = max(0,(x - i + 1) / 2);
      |                    ~~~^~~~~~~~~~~~~~~~~~~
a.cc:22:23: error: no matching function for call to 'max(int, long long int)'
   22 |         ll needy = max(0,(y - i + 1) / 2);
      |                    ~~~^~~~~~~~~~~~~~~~~~~
/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:22:23: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   22 |         ll needy = max(0,(y - i + 1) / 2);
      |                    ~~~^~~~~~~~~~~~~~~~~~~
/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:22:23: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   22 |         ll needy = max(0,(y - i + 1) / 2);
      |                    ~~~^~~~~~~~~~~~~~~~~~~