art.cpp: In function 'void solve(int)':
art.cpp:29:13: error: 'publish' was not declared in this scope
29 | int a=publish(cur);
| ^~~~~~~
art.cpp:41:3: error: 'answer' was not declared in this scope
41 | answer(tab);
| ^~~~~~
art.cpp:12:7: warning: unused variable 'x' [-Wunused-variable]
12 | int x=-1;
| ^
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) {
| ~~~~~~~~~^~~~