answer.code: In function ‘void solve()’:
answer.code:36:9: error: ‘Input’ was not declared in this scope
   36 |         Input Output int x = a[i], y = a[i + 1];
      |         ^~~~~
answer.code:38:18: error: ‘x’ was not declared in this scope
   38 |             swap(x, y);
      |                  ^
answer.code:38:21: error: ‘y’ was not declared in this scope
   38 |             swap(x, y);
      |                     ^
answer.code:39:27: error: ‘y’ was not declared in this scope
   39 |         ans = max(ans, c1[y] + c2[x] - mp[{x, y}]);
      |                           ^
answer.code:39:35: error: ‘x’ was not declared in this scope
   39 |         ans = max(ans, c1[y] + c2[x] - mp[{x, y}]);
      |                                   ^
answer.code:39:42: error: no match for ‘operator[]’ (operand types are ‘std::map<std::pair<int, int>, int>’ and ‘<brace-enclosed initializer list>’)
   39 |         ans = max(ans, c1[y] + c2[x] - mp[{x, y}]);
      |                                          ^
In file included from /usr/include/c++/13/map:63,
                 from /usr/include/x86_64-linux-gnu/c++/13/bits/stdc++.h:152,
                 from answer.code:1:
/usr/include/c++/13/bits/stl_map.h:504:7: note: candidate: ‘std::map<_Key, _Tp, _Compare, _Alloc>::mapped_type& std::map<_Key, _Tp, _Compare, _Alloc>::operator[](const key_type&) [with _Key = std::pair<int, int>; _Tp = int; _Compare = std::less<std::pair<int, int> >; _Alloc = std::allocator<std::pair<const std::pair<int, int>, int> >; mapped_type = int; key_type = std::pair<int, int>]’
  504 |       operator[](const key_type& __k)
      |       ^~~~~~~~
/usr/include/c++/13/bits/stl_map.h:504:34: note:   no known conversion for argument 1 from ‘<brace-enclosed initializer list>’ to ‘const std::map<std::pair<int, int>, int>::key_type&’ {aka ‘const std::pair<int, int>&’}
  504 |       operator[](const key_type& __k)
      |                  ~~~~~~~~~~~~~~~~^~~
/usr/include/c++/13/bits/stl_map.h:524:7: note: candidate: ‘std::map<_Key, _Tp, _Compare, _Alloc>::mapped_type& std::map<_Key, _Tp, _Compare, _Alloc>::operator[](key_type&&) [with _Key = std::pair<int, int>; _Tp = int; _Compare = std::less<std::pair<int, int> >; _Alloc = std::allocator<std::pair<const std::pair<int, int>, int> >; mapped_type = int; key_type = std::pair<int, int>]’
  524 |       operator[](key_type&& __k)
      |       ^~~~~~~~
/usr/include/c++/13/bits/stl_map.h:524:29: note:   no known conversion for argument 1 from ‘<brace-enclosed initializer list>’ to ‘std::map<std::pair<int, int>, int>::key_type&&’ {aka ‘std::pair<int, int>&&’}
  524 |       operator[](key_type&& __k)
      |                  ~~~~~~~~~~~^~~