Language: C++

#include <bits/stdc++.h>
#define REP(i, a, n) for(ll i = ((ll) a); i < ((ll) n); i++)
#define INF 1000000000LL
using namespace std;
typedef long long ll;

ll N, MA, MB;
vector<ll> A[2], B[2], C[2];
ll dp[2][201][201];

int main(void) {
  cin >> N >> MA >> MB;
  REP(i, 0, N) {
    ll a, b, c;
    cin >> a >> b >> c;
    A[i % 2].push_back(a);
    B[i % 2].push_back(b);
    C[i % 2].push_back(c);
  }

  if(N == 1) {
    cout << (MA * B[0][0] == MB * A[0][0] ? C[0][0] : -1) << endl;
  } else {
    REP(p, 0, 2) {
      ll n = A[p].size();
      REP(i, 0, 201) REP(j, 0, 201) dp[p][i][j] = INF;
      REP(i, 0, 1 << n) {
        ll a = 0, b = 0, c = 0;
        REP(j, 0, n) if(i & (1 << j)) a += A[p][j], b += B[p][j], c += C[p][j];
        dp[p][a][b] = min(dp[p][a][b], c);
      }
    }
    ll ans = INF;
    REP(i, 0, 201) REP(j, 0, 201) REP(k, 0, 201) if((i + k) % MA == 0) {
      ll l = MB * ((i + k) / MA) - j;
      if(i == 0 && j == 0 && k == 0 && l == 0) continue;
      ans = min(ans, dp[0][i][j] + dp[1][k][l]);
    }
    cout << ans != INF ? ans : -1 << endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:39:17: error: no match for 'operator!=' (operand types are 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} and 'long long int')
   39 |     cout << ans != INF ? ans : -1 << endl;
      |     ~~~~~~~~~~~ ^~
      |          |
      |          std::basic_ostream<char>::__ostream_type {aka std::basic_ostream<char>}
a.cc:39:17: note: candidate: 'operator!=(int, long long int)' (built-in)
   39 |     cout << ans != INF ? ans : -1 << endl;
      |                 ^
a.cc:39:17: note:   no known conversion for argument 1 from 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} to 'int'
In file included from /usr/include/c++/14/regex:68,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:181,
                 from a.cc:1:
/usr/include/c++/14/bits/regex.h:1132:5: note: candidate: 'template<class _BiIter> bool std::__cxx11::operator!=(const sub_match<_BiIter>&, const sub_match<_BiIter>&)'
 1132 |     operator!=(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1132:5: note:   template argument deduction/substitution failed:
a.cc:3:13: note:   'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'const std::__cxx11::sub_match<_BiIter>'
    3 | #define INF 1000000000LL
      |             ^~~~~~~~~~~~
a.cc:39:20: note: in expansion of macro 'INF'
   39 |     cout << ans != INF ? ans : -1 << endl;
      |                    ^~~
/usr/include/c++/14/bits/regex.h:1212:5: note: candidate: 'template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator!=(__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&, const sub_match<_BiIter>&)'
 1212 |     operator!=(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1212:5: note:   template argument deduction/substitution failed:
a.cc:3:13: note:   'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>'
    3 | #define INF 1000000000LL
      |             ^~~~~~~~~~~~
a.cc:39:20: note: in expansion of macro 'INF'
   39 |     cout << ans != INF ? ans : -1 << endl;
      |                    ^~~
/usr/include/c++/14/bits/regex.h:1305:5: note: candidate: 'template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator!=(const sub_match<_BiIter>&, __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&)'
 1305 |     operator!=(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1305:5: note:   template argument deduction/substitution failed:
a.cc:3:13: note:   'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'const std::__cxx11::sub_match<_BiIter>'
    3 | #define INF 1000000000LL
      |             ^~~~~~~~~~~~
a.cc:39:20: note: in expansion of macro 'INF'
   39 |     cout << ans != INF ? ans : -1 << endl;
      |                    ^~~
/usr/include/c++/14/bits/regex.h:1379:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator!=(const typename std::iterator_traits<_Iter>::value_type*, const sub_match<_BiIter>&)'
 1379 |     operator!=(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1379:5: note:   template argument deduction/substitution failed:
a.cc:3:13: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'long long int'
    3 | #define INF 1000000000LL
      |             ^~~~~~~~~~~~
a.cc:39:20: note: in expansion of macro 'INF'
   39 |     cout << ans != INF ? ans : -1 << endl;
      |                    ^~~
/usr/include/c++/14/bits/regex.h:1473:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator!=(const sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type*)'
 1473 |     operator!=(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1473:5: note:   template argument deduction/substitution failed:
a.cc:3:13: note:   'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'const std::__cxx11::sub_match<_BiIter>'
    3 | #define INF 1000000000LL
      |             ^~~~~~~~~~~~
a.cc:39:20: note: in expansion of macro 'INF'
   39 |     cout << ans != INF ? ans : -1 << endl;
      |                    ^~~
/usr/include/c++/14/bits/regex.h:1547:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator!=(const typename std::iterator_traits<_Iter>::value_type&, const sub_match<_BiIter>&)'
 1547 |     operator!=(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1547:5: note:   template argument deduction/substitution failed:
a.cc:3:13: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'long long int'
    3 | #define INF 1000000000LL
      |             ^~~~~~~~~~~~
a.cc:39:20: note: in expansion of macro 'INF'
   39 |     cout << ans != INF ? ans : -1 << endl;
      |                    ^~~
/usr/include/c++/14/bits/regex.h:1647:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator!=(const sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type&)'
 1647 |     operator!=(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1647:5: note:   template argument deduction/substitution failed:
a.cc:3:13: note:   'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'const std::__cxx11::sub_match<_BiIter>'
    3 | #define INF 1000000000LL
      |             ^~~~~~~~~~~~
a.cc:39:20: note: in expansion of macro 'INF'
   39 |     cout << ans != INF ? ans : -1 << endl;
      |                    ^~~
/usr/include/c++/14/bits/regex.h:2213:5: note: candidate: 'template<class _Bi_iter, class _Alloc> bool std::__cxx11::operator!=(const match_results<_BiIter, _Alloc>&, const match_results<_BiIter, _Alloc>&)'
 2213 |     operator!=(const match_results<_Bi_iter, _Alloc>& __m1,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:2213:5: note:   template argument deduction/substitution failed:
a.cc:3:13: note:   'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'const std::__cxx11::match_results<_BiIter, _Alloc>'
    3 | #define INF 1000000000LL
      |             ^~~~~~~~~~~~
a.cc:39:20: note: in expansion of macro 'INF'
   39 |     cout << ans != INF ? ans : -1 << endl;
      |                    ^~~
In file included from /usr/include/c++/14/bits/stl_algobase.h:64,
                 from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51:
/usr/include/c++/14/bits/stl_pair.h:1052:5: note: candidate: 'template<class _T1, class _T2> constexpr bool std::operator!=(const pair<_T1, _T2>&, const pair<_T1, _T2>&)'
 1052 |     operator!=(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_pair.h:1052:5: note:   template argument deduction/substitution failed:
a.cc:3:13: note:   'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'const std::pair<_T1, _T2>'
    3 | #define INF 1000000000LL
      |             ^~~~~~~~~~~~
a.cc:39:20: note: in expansion of macro 'INF'
   39 |     cout << ans != INF ? ans : -1 << endl;
      |                    ^~~
In file included from /usr/include/c++/14/bits/stl_algobase.h:67:
/usr/include/c++/14/bits/stl_iterator.h:455:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator!=(const reverse_iterator<_Iterator>&, const reverse_iterator<_Iterator>&)'
  455 |     operator!=(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:455:5: note:   template argument deduction/substitution failed:
a.cc:3:13: note:   'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'const std::reverse_iterator<_Iterator>'
    3 | #define INF 1000000000LL
      |             ^~~~~~~~~~~~
a.cc:39:20: note: in expansion of macro 'INF'
   39 |     cout << ans != INF ? ans : -1 << endl;
      |                    ^~~
/usr/include/c++/14/bits/stl_iterator.h:500:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator!=(const reverse_iterator<_Iterator>&, const reverse_iterator<_IteratorR>&)'
  500 |     operator!=(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:500:5: note:   template argument deduction/substitution failed:
a.cc:3:13: note:   'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'const std::reverse_iterator<_Iterator>'
    3 | #define INF 1000000000LL
      |             ^~~~~~~~~~~~
a.cc:39:20: note: in expansion of macro 'INF'
   39 |     cout << ans != INF ? ans : -1 << endl;
      |                    ^~~
/usr/include/c++/14/bits/stl_iterator.h:1686:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator!=(const move_iterator<_IteratorL>&, const move_iterator<_IteratorR>&)'
 1686 |     operator!=(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1686:5: note:   template argument deduction/substitution failed:
a.cc:3:13: note:   'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'const std::move_iterator<_IteratorL>'
    3 | #define INF 1000000000LL
      |             ^~~~~~~~~~~~
a.cc:39:20: note: in expansion of macro 'INF'
   39 |     cout << ans != INF ? ans : -1 << endl;
      |                    ^~~
/usr/include/c++/14/bits/stl_iterator.h:1753:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator!=(const move_iterator<_IteratorL>&, const move_iterator<_IteratorL>&)'
 1753 |     operator!=(const move_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.