art.cpp: In function 'void solve(int)':
art.cpp:30:16: error: 'n' was not declared in this scope
30 | vector<int> v(n), ans(n);
| ^
art.cpp:56:12: error: no match for call to '(std::vector<int>) (int)'
56 | ans(a + 1) = i;
| ^
interface.cpp: In function 'int publish(std::vector<int>)':
interface.cpp:20:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
20 | if(v.size() != N) {
| ~~~~~~~~~^~~~
interface.cpp: In function 'void answer(std::vector<int>)':
interface.cpp:36:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
36 | if(v.size() != N) {
| ~~~~~~~~~^~~~