answer.code: In function ‘int circuit(int, int, int*, int (*)[2], int (*)[16])’:
answer.code:443:31: error: template argument 1 is invalid
  443 |     vector<vector<numbers::bit>> a, b;
      |                               ^~
answer.code:443:31: error: template argument 2 is invalid
answer.code:443:37: error: template argument 1 is invalid
  443 |     vector<vector<numbers::bit>> a, b;
      |                                     ^
answer.code:443:37: error: template argument 2 is invalid
answer.code:444:24: error: template argument 1 is invalid
  444 |     vector<numbers::bit> p_xtoa, p_xtoy;
      |                        ^
answer.code:444:24: error: template argument 2 is invalid
answer.code:446:24: error: reference to ‘numbers’ is ambiguous
  446 |         namespace io = numbers::io;
      |                        ^~~~~~~
In file included from /usr/include/c++/11/bits/max_size_type.h:37,
                 from /usr/include/c++/11/bits/ranges_base.h:38,
                 from /usr/include/c++/11/string_view:48,
                 from /usr/include/c++/11/bits/basic_string.h:48,
                 from /usr/include/c++/11/string:55,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from answer.code:2:
/usr/include/c++/11/numbers:48:11: note: candidates are: ‘namespace std::numbers { }’
   48 | namespace numbers
      |           ^~~~~~~
answer.code:127:15: note:                 ‘namespace circuit_helpers::numbers { }’
  127 |     namespace numbers
      |               ^~~~~~~
answer.code:446:33: error: ‘io’ is not a namespace-name
  446 |         namespace io = numbers::io;
      |                                 ^~
answer.code:447:9: error: ‘io’ has not been declared
  447 |         io::init(la + lb);
      |         ^~
answer.code:451:9: error: ‘a’ was not declared in this scope
  451 |         a.resize(n);
      |         ^
answer.code:454:60: error: ‘io’ has not been declared
  454 |             for (; a[i].size() < NAME_SIZE; a[i].push_back(io::input_ptr++))
      |                                                            ^~
answer.code:456:71: error: ‘io’ has not been declared
  456 |             for (; a[i].size() < NAME_SIZE + NUM_SIZE; a[i].push_back(io::input_ptr++))
      |                                                                       ^~
answer.code:458:72: error: ‘io’ has not been declared
  458 |             for (; a[i].size() < NAME_SIZE + NAME_SIZE; a[i].push_back(io::zero))
      |                                                                        ^~
answer.code:460:28: error: ‘io’ has not been declared
  460 |             a[i].push_back(io::zero);
      |                            ^~
answer.code:463:20: error: request for member ‘push_back’ in ‘p_xtoa’, which is of non-class type ‘int’
  463 |             p_xtoa.push_back(io::input_ptr++);
      |                    ^~~~~~~~~
answer.code:463:30: error: ‘io’ has not been declared
  463 |             p_xtoa.push_back(io::input_ptr++);
      |                              ^~
answer.code:467:9: error: ‘b’ was not declared in this scope
  467 |         b.resize(m);
      |         ^
answer.code:470:60: error: ‘io’ has not been declared
  470 |             for (; b[i].size() < NAME_SIZE; b[i].push_back(io::input_ptr++))
      |                                                            ^~
answer.code:472:72: error: ‘io’ has not been declared
  472 |             for (; b[i].size() < NAME_SIZE + NAME_SIZE; b[i].push_back(io::input_ptr++))
      |                                                                        ^~
answer.code:474:28: error: ‘io’ has not been declared
  474 |             b[i].push_back(io::one);
      |                            ^~
answer.code:477:20: error: request for member ‘push_back’ in ‘p_xtoy’, which is of non-class type ‘int’
  477 |             p_xtoy.push_back(io::input_ptr++);
      |                    ^~~~~~~~~
answer.code:477:30: error: ‘io’ has not been declared
  477 |             p_xtoy.push_back(io::input_ptr++);
      |                              ^~
In file included from /usr/include/c++/11/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:33,
                 from answer.code:2:
answer.code:479:16: error: ‘io’ has not been declared
  479 |         assert(io::input_ptr == io::input_size);
      |                ^~
answer.code:479:33: error: ‘io’ has not been declared
  479 |         assert(io::input_ptr == io::input_size);
      |                                 ^~
answer.code:484:31: error: template argument 1 is invalid
  484...