Language: C++

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

int main()
{
  long n, ga, sa, ba, gb, sb, bb, amax = 0;
  cin >> n >> ga >> sa >> ba >> gb >> sb >> bb;
  for (long i = 0; i <= n / ga * (ga < gb); i++) {
    for (long j = 0; j <= (n - i * ga) / sa * (sa < sb); j++) {
      long a = n - i * ga - j * sa;
      long k = ba < bb ? a / ba : 0;
      a -= k * ba;
      a += i * gb + j * sb + k * bb;
      if (a > amax) amax = a;
    }
  }
  n = amax;
  for (long i = ga > gb ? max(0, n / gb - sb * bb) : 0; i <= n / gb * (ga > gb); i++) {
    for (long j = sa > sb ? max(0, (n - i * gb) / sb - bb) : 0; j <= (n - i * gb) / sb * (sa > sb); j++) {
      long a = n - i * gb - j * sb;
      long k = ba > bb ? a / bb : 0;
      a -= k * bb;
      a += i * ga + j * sa + k * ba;
      if (a > amax) amax = a;
    }
  }
  cout << amax << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:18:30: error: no matching function for call to 'max(int, long int)'
   18 |   for (long i = ga > gb ? max(0, n / gb - sb * bb) : 0; i <= n / gb * (ga > gb); 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:18:30: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long int')
   18 |   for (long i = ga > gb ? max(0, n / gb - sb * bb) : 0; i <= n / gb * (ga > gb); 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:18:30: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   18 |   for (long i = ga > gb ? max(0, n / gb - sb * bb) : 0; i <= n / gb * (ga > gb); i++) {
      |                           ~~~^~~~~~~~~~~~~~~~~~~~~
a.cc:19:32: error: no matching function for call to 'max(int, long int)'
   19 |     for (long j = sa > sb ? max(0, (n - i * gb) / sb - bb) : 0; j <= (n - i * gb) / sb * (sa > sb); j++) {
      |                             ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
/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:19:32: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long int')
   19 |     for (long j = sa > sb ? max(0, (n - i * gb) / sb - bb) : 0; j <= (n - i * gb) / sb * (sa > sb); j++) {
      |                             ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
/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:19:32: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   19 |     for (long j = sa > sb ? max(0, (n - i * gb) / sb - bb) : 0; j <= (n - i * gb) / sb * (sa > sb); j++) {
      |                             ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~