answer.code:4:8: error: size of array ‘id’ is not an integral constant-expression
    4 | int id[V],tmp[V];
      |        ^
answer.code:4:15: error: size of array ‘tmp’ is not an integral constant-expression
    4 | int id[V],tmp[V];
      |               ^
answer.code:5:10: error: size of array ‘vis’ is not an integral constant-expression
    5 | bool vis[V];
      |          ^
answer.code:6:1: error: ‘vector’ does not name a type
    6 | vector<int>qa,qb;
      | ^~~~~~
answer.code: In function ‘int richest(int, int, int)’:
answer.code:13:17: error: ‘qa’ was not declared in this scope
   13 |                 qa.clear(),qb.clear();
      |                 ^~
answer.code:13:28: error: ‘qb’ was not declared in this scope
   13 |                 qa.clear(),qb.clear();
      |                            ^~
answer.code:18:17: error: ‘vector’ was not declared in this scope; did you mean ‘std::vector’?
   18 |                 vector<int>ans=ask(qa,qb);
      |                 ^~~~~~
      |                 std::vector
In file included from /usr/include/c++/13/vector:66,
                 from richest.h:4,
                 from answer.code:1:
/usr/include/c++/13/bits/stl_vector.h:425:11: note: ‘std::vector’ declared here
  425 |     class vector : protected _Vector_base<_Tp, _Alloc>
      |           ^~~~~~
answer.code:18:24: error: expected primary-expression before ‘int’
   18 |                 vector<int>ans=ask(qa,qb);
      |                        ^~~
answer.code:19:17: error: ‘R’ was not declared in this scope
   19 |                 R=0;
      |                 ^
answer.code:22:49: error: ‘ans’ was not declared in this scope; did you mean ‘abs’?
   22 |                                 vis[id[j]+id[k]-ans[R++]]=1;
      |                                                 ^~~
      |                                                 abs
answer.code:30:1: warning: no return statement in function returning non-void [-Wreturn-type]
   30 | }
      | ^