art.cpp: In function 'void solve(int)':
art.cpp:11:20: error: 'n' was not declared in this scope
11 | for(int i=1;i<=n;i++){
| ^
art.cpp:18:20: error: 'n' was not declared in this scope
18 | for(int i=2;i<=n+1;i++){
| ^
art.cpp:23:12: error: return-statement with a value, in function returning 'void' [-fpermissive]
23 | return 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) {
| ~~~~~~~~~^~~~