art.cpp: In function 'void solve(int)':
art.cpp:14:25: error: 'all' was not declared in this scope
14 | while(next_permutation(all(a))){
| ^~~
art.cpp:14:8: error: 'next_permutation' was not declared in this scope
14 | while(next_permutation(all(a))){
| ^~~~~~~~~~~~~~~~
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) {
| ~~~~~~~~~^~~~