implementer.cpp: In function ‘void regduj260135279::init()’:
implementer.cpp:32:22: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   32 |                 scanf("%d",&n);
      |                 ~~~~~^~~~~~~~~
implementer.cpp:45:30: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   45 |                         scanf("%d%d",&u,&v);
      |                         ~~~~~^~~~~~~~~~~~~~
answer.code: In function ‘void solver(int, int, int)’:
answer.code:5:12: error: request for member ‘push_back’ in ‘D.std::vector<int>::operator[](((std::vector<int>::size_type)dep[i]))’, which is of non-class type ‘__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type’ {aka ‘int’}
    5 | #define pb push_back
      |            ^~~~~~~~~
answer.code:11:62: note: in expansion of macro ‘pb’
   11 |                 Q.clear(),Q.pb(i),dep[i]=ask(rt,Q),D[dep[i]].pb(i);
      |                                                              ^~
answer.code:12:23: error: ‘begin’ was not declared in this scope
   12 |         for(auto x:D[1])answer(rt,x);
      |                       ^
answer.code:12:23: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:95,
                 from tree.h:1,
                 from answer.code:1:
/usr/include/c++/11/valarray:1224:5: note:   ‘std::begin’
 1224 |     begin(const valarray<_Tp>& __va)
      |     ^~~~~
In file included from /usr/include/c++/11/filesystem:46,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:129,
                 from tree.h:1,
                 from answer.code:1:
/usr/include/c++/11/bits/fs_dir.h:549:3: note:   ‘std::filesystem::__cxx11::begin’
  549 |   begin(recursive_directory_iterator __iter) noexcept
      |   ^~~~~
answer.code:12:23: error: ‘end’ was not declared in this scope
   12 |         for(auto x:D[1])answer(rt,x);
      |                       ^
answer.code:12:23: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:95,
                 from tree.h:1,
                 from answer.code:1:
/usr/include/c++/11/valarray:1244:5: note:   ‘std::end’
 1244 |     end(const valarray<_Tp>& __va)
      |     ^~~
In file included from /usr/include/c++/11/filesystem:46,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:129,
                 from tree.h:1,
                 from answer.code:1:
/usr/include/c++/11/bits/fs_dir.h:554:3: note:   ‘std::filesystem::__cxx11::end’
  554 |   end(recursive_directory_iterator) noexcept
      |   ^~~
answer.code:13:38: error: request for member ‘size’ in ‘D.std::vector<int>::operator[](((std::vector<int>::size_type)d))’, which is of non-class type ‘__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type’ {aka ‘int’}
   13 |         for(int d=2;d<=n;d++)if(D[d].size()){
      |                                      ^~~~
answer.code:14:28: error: request for member ‘size’ in ‘D.std::vector<int>::operator[](((std::vector<int>::size_type)(d - 1)))’, which is of non-class type ‘__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type’ {aka ‘int’}
   14 |                 top=D[d-1].size();
      |                            ^~~~
answer.code:15:53: error: invalid types ‘__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type {aka int}[int]’ for array subscript
   15 |                 for(int i=1;i<=top;i++)stk[i]=D[d-1][i-1];
      |                                                     ^
answer.code:16:31: error: ‘begin’ was not declared in this scope
   16 |                 for(auto x:D[d]){
      |                               ^
answer.code:16:31: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:95,
                 from tree.h:1,
                 from answer.code:1:
/usr/include/c++/11/valarray:1224:5: note:   ‘std::begin’
 1224 |     begin(const valarray<_Tp>& __va)
      |     ^~~~~
In file included from /usr/include/c++/11/filesystem:46,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:129,
                 from tree.h:1,
                 from answer.code:1:
/usr/include/c++/11/bits/fs_dir.h:549:3: note:   ‘std::filesystem::__cxx11::begin’
  549 |   begin(recursive_directory_iterator __iter) noexcept
      |   ^~~~~
answer.code:16:31: error: ‘end’ was not declared in this scope
   16 |                 for(auto x:D[d]){
      |                               ^
answer.code:16:31: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:95,
                 from tree.h:1,
                 from answer.code:1:
/usr/include/c++/11/valarray:1244:5: note:   ‘std::end’
 1244 |     end(const valarray<_Tp>& __va)
      |     ^~~
In file included from /usr/include/c++/11/filesystem:46,
                 fr...