art.cpp: In function 'void solve(int)':
art.cpp:21:11: error: 'publish' was not declared in this scope
21 | int ans=publish (L);
| ^~~~~~~
art.cpp:25:9: error: 'n' was not declared in this scope
25 | pos [(n-ans+last)/2]=N-i+2;
| ^
art.cpp:31:2: error: 'answer' was not declared in this scope
31 | answer (ans);
| ^~~~~~
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) {
| ~~~~~~~~~^~~~