Language: C++

#include<bits/extc++.h>
#ifdef _debug 
#define dout(i) cout << #i << ' ' << i << ' '
#else 
#include<bits/stdc++.h>
#define dout(i) 0&&0
#endif
#pragma GCC optimize("unroll-loops,no-stack-protector,O3")
#define eout(i) {cout << (i) << '\n';exit(0);}
#define rout(i) {return cout << (i) << '\n', 0;}
#define priority_queue __gnu_pbds::priority_queue
#define unordered_map __gnu_pbds::gp_hash_table
#define rep(a, b) {for(int _i = a;_i > 0;--_i){b;}}
#define multe int _T;for(cin >> _T;_T--;)
using namespace std;
using ll = long long;using ull = unsigned long long;using ul = unsigned;using db = double;
using __gnu_pbds::null_type;
template<typename T> void read(int n, T s){while(n--)cin >> *s, ++s;}
template<typename T> void write(int n, T s){while(n--)cout << *s << " \n"[n==0], ++s;}
template<typename T> using rbtree = __gnu_pbds::tree<T,__gnu_pbds::null_type,less<T>,__gnu_pbds::rb_tree_tag,__gnu_pbds::tree_order_statistics_node_update>;
template<typename T> inline ostream& operator << (ostream &ou, const vector<T> &a){for(auto it = a.begin();it != a.end();++it)ou << (it != a.begin() ? " " : "") << *it;return ou;}
template<typename T1, typename T2>inline istream& operator >> (istream &in, pair<T1, T2> &a){return in >> a.first >> a.second;}
template<typename T1, typename T2>inline ostream& operator << (ostream &ou, const pair<T1, T2> &b){return ou << b.first << ' ' << b.second;}
template<typename T> inline long long pow(long long v, long long t, const T &p){long long res = 1;for(;t;t >>= 1, v = v * v % p)if(t & 1)res = res * v % p;return res;}
const int maxn = 300010;
#define int ll
int a, b, c, x, y;
signed main(){
	ios_base::sync_with_stdio(0), cin.tie(0);
	cin >> a >> b >> c >> x >> y;
	int res = a*x + b*y;
	for(int i = 1;i < 1e5;++++i){
		res = min(res, c*u + max(0, x-c/2) * a + max(0, y-c/2) * b);;
	}
	cout << res << '\n';
}

Compiler output:
a.cc: In function 'int main()':
a.cc:33:34: error: 'u' was not declared in this scope
   33 |                 res = min(res, c*u + max(0, x-c/2) * a + max(0, y-c/2) * b);;
      |                                  ^
a.cc:33:41: error: no matching function for call to 'max(int, ll)'
   33 |                 res = min(res, c*u + max(0, x-c/2) * a + max(0, y-c/2) * b);;
      |                                      ~~~^~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/extc++.h:32,
                 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:33:41: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'll' {aka 'long long int'})
   33 |                 res = min(res, c*u + max(0, x-c/2) * a + max(0, y-c/2) * b);;
      |                                      ~~~^~~~~~~~~~
/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:33:41: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   33 |                 res = min(res, c*u + max(0, x-c/2) * a + max(0, y-c/2) * b);;
      |                                      ~~~^~~~~~~~~~
a.cc:33:61: error: no matching function for call to 'max(int, ll)'
   33 |                 res = min(res, c*u + max(0, x-c/2) * a + max(0, y-c/2) * b);;
      |                                                          ~~~^~~~~~~~~~
/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:33:61: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'll' {aka 'long long int'})
   33 |                 res = min(res, c*u + max(0, x-c/2) * a + max(0, y-c/2) * b);;
      |                                                          ~~~^~~~~~~~~~
/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:33:61: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   33 |                 res = min(res, c*u + max(0, x-c/2) * a + max(0, y-c/2) * b);;
      |                                                          ~~~^~~~~~~~~~