library.cpp: In function 'void rec(long long int, std::vector<int>)':
library.cpp:19:18: error: 'Query' was not declared in this scope
19 | long long fr=Query(grp);
| ^~~~~
library.cpp:21:20: error: 'qrp' was not declared in this scope; did you mean 'grp'?
21 | if(fr+1==Query(qrp))
| ^~~
| grp
library.cpp:28:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
28 | for(int i=0;i<grp.size()/2;i++)
| ~^~~~~~~~~~~~~
library.cpp:32:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
32 | for(int i=grp.size()/2;i<grp.size();i++)
| ~^~~~~~~~~~~
library.cpp:36:13: error: 'st' was not declared in this scope; did you mean 's'?
36 | rec(st,on);
| ^~
| s
library.cpp: In function 'void Solve(int)':
library.cpp:54:23: error: 'Query' was not declared in this scope
54 | long long ans=Query(ask);
| ^~~~~
library.cpp:62:19: error: 'st' was not declared in this scope; did you mean 's'?
62 | ret.push_back(st);
| ^~
| s
library.cpp:74:5: error: 'Answer' was not declared in this scope
74 | Answer(ret);
| ^~~~~~