art.cpp: In function 'void solve(int)':
art.cpp:13:15: error: 'publish' was not declared in this scope
13 | an[i]=publish(v);
| ^~~~~~~
art.cpp:22:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
22 | for(int j=0;j<v.size();j++)
| ~^~~~~~~~~
art.cpp:45:5: error: 'answer' was not declared in this scope
45 | answer(ou);
| ^~~~~~
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) {
| ~~~~~~~~~^~~~