#include<bits/stdc++.h>
#include"tree.h"
int ask(int u,std::vector<int>v);
void answer(int u,int v);
void solver(int n,int A,int B)
{
	int dis;
	for(int i=1;i<=n;++i)
	{
		for(int j=i+1;j<=n;++j)
		{
			vector<int>a;
			a.push_back(j);
			dis=ask(i,a);
			if(dis)answer(i,j);
		}
	}
	return; 
}

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:12:25: error: ‘vector’ was not declared in this scope; did you mean ‘std::vector’?
   12 |                         vector<int>a;
      |                         ^~~~~~
      |                         std::vector
In file included from /usr/include/c++/11/vector:67,
                 from /usr/include/c++/11/queue:61,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:86,
                 from answer.code:1:
/usr/include/c++/11/bits/stl_vector.h:389:11: note: ‘std::vector’ declared here
  389 |     class vector : protected _Vector_base<_Tp, _Alloc>
      |           ^~~~~~
answer.code:12:32: error: expected primary-expression before ‘int’
   12 |                         vector<int>a;
      |                                ^~~
answer.code:13:25: error: ‘a’ was not declared in this scope
   13 |                         a.push_back(j);
      |                         ^