art.cpp: In function 'void solve(int)':
art.cpp:10:28: error: call of overloaded 'publish(std::vector<int>&)' is ambiguous
10 | int num = publish(v);
| ^
In file included from art.cpp:2:
art.h:5:5: note: candidate: 'int publish(std::vector<int>)'
5 | int publish(std::vector<int>);
| ^~~~~~~
art.cpp:4:5: note: candidate: 'int publish(std::vector<int>&)'
4 | int publish(vector<int>&R);
| ^~~~~~~
art.cpp:12:49: error: expected ';' before 'answer'
12 | }while(next_permutation(v.begin(), v.end()))
| ^
| ;
13 | answer(v);
| ~~~~~~
art.cpp:13:13: error: call of overloaded 'answer(std::vector<int>&)' is ambiguous
13 | answer(v);
| ^
In file included from art.cpp:2:
art.h:12:6: note: candidate: 'void answer(std::vector<int>)'
12 | void answer(std::vector<int>);
| ^~~~~~
art.cpp:5:6: note: candidate: 'void answer(std::vector<int>&)'
5 | void answer(vector<int>&R);
| ^~~~~~
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) {
| ~~~~~~~~~^~~~