oj.uz

Submission #367337

# Submission time Handle Problem Language Result Execution time Memory
367337 2021-02-16T22:09:08 Z MilosMilutinovic Connecting Supertrees (IOI20_supertrees) C++14
Compilation error
 0 ms 0 KB 
#include <bits/stdc++.h>
#include "supertrees.h"
using namespace std;
#define pb push_back
const int N=1050;
vector<int> E[N];
vector<vector<int>> p;
vector<int> par(N);
vector<vector<int>> ans(N,vector<int>(N,0));
void AddEdge(int u,int v){E[u].pb(v);E[v].pb(u);}
vector<int> Euler;
bool was[N];
void DFS1(int u){
	was[u]=true,Euler.pb(u);
	for(int v:E[u])if(!was[v]&&p[u][v]==1)DFS1(v);
}
void DFS2(int u){
	was[u]=true,Euler.pb(u);
	for(int v:E[u])if(!was[v]&&p[u][v]==2)DFS2(v);
}
int construct(vector<vector<int>> P){
	p=P;int n=(int)P.size();
	for(int i=0;i<n;i++)for(int j=0;j<n;j++)if(p[i][j]==3)return 0;
	ans.resize(n);
	for(int i=0;i<n;i++)ans[i].resize(n);
	for(int i=0;i<n;i++)for(int j=0;j<n;j++)ans[i][j]=0;
	for(int i=0;i<n;i++)for(int j=i+1;j<n;j++)if(p[i][j]>0)AddEdge(i,j);
	bool one=false,two=false;
	for(int i=0;i<n;i++)for(int j=i+1;j<n;j++)if(p[i][j]==1)one=true;
	for(int i=0;i<n;i++)for(int j=i+1;j<n;j++)if(p[i][j]==2)two=true;
	if(!one&&!two){build(ans);return 1;}
	if(one&&!two){
		for(int i=0;i<n;i++){
			if(!was[i]){
				DFS1(i);
				if((int)Euler.size()==1){Euler.clear();continue;}
				for(int x:Euler)for(int y:Euler)if(x!=y&&p[x][y]==0)return 0;
				for(int i=1;i<(int)Euler.size();i++){
					int x=Euler[i],y=Euler[i-1];
					ans[x][y]=ans[y][x]=1;
				}
				Euler.clear();
			}
		}
		build(ans);
		return 1;
	}
	if(!one&&two){
		for(int i=0;i<n;i++){
			if(!was[i]){
				DFS2(i);
				if((int)Euler.size()==1){Euler.clear();continue;}
				if((int)Euler.size()==2)return 0;
				for(int x:Euler)for(int y:Euler)if(x!=y&&p[x][y]==0)return 0;
				for(int i=1;i<(int)Euler.size();i++){
					int x=Euler[i],y=Euler[i-1];
					ans[x][y]=ans[y][x]=1;
				}
				if(Euler.size()>2){
					int x=Euler[0],y=Euler.back();
					ans[x][y]=ans[y][x]=1;
				}
				Euler.clear();
			}
		}
		build(ans);
		return 1;
	}
	if(one&&two){
		vector<int> root;
		vector<int> ch[n];
		for(int i=0;i<n;i++){
			if(!was[i]){
				DFS1(i);
				root.push_back(Euler.back());
				for(int i=0;i<(int)Euler.size()-1;i++)ch[Euler.back()].pb(Euler[i]);
				if((int)Euler.size()==1){par[i]=i;Euler.clear();continue;}
				for(int x:Euler)for(int y:Euler)if(x!=y&&p[x][y]!=1)return 0;
				for(int x:Euler)par[x]=Euler.back();
				for(int i=1;i<(int)Euler.size();i++){
					int x=Euler[i],y=Euler[i-1];
					ans[x][y]=ans[y][x]=1;
				}
				Euler.clear();
			}
		}
		for(int i=0;i<n;i++)was[i]=false;
		for(int i=0;i<n;i++){
			if(!was[i]){
				DFS2(i);
				for(int j=0;j<ch[i];j++){
					if(!was[j])DFS2(j);
				}
				if((int)Euler.size()==1){Euler.clear();continue;}
				if((int)Euler.size()==2)return 0;
				for(int i=1;i<(int)Euler.size();i++){
					int x=Euler[i],y=Euler[i-1];
					ans[x][y]=ans[y][x]=1;
				}
				int x=Euler[0],y=Euler.back();
				ans[x][y]=ans[y][x]=1;
				Euler.clear();
			}
		}
		build(ans);
		return 1;
	}
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:91:18: error: no match for 'operator<' (operand types are 'int' and 'std::vector<int>')
   91 |     for(int j=0;j<ch[i];j++){
      |                 ~^~~~~~
      |                 |     |
      |                 int   std::vector<int>
In file included from /usr/include/c++/9/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:110,
                 from supertrees.cpp:1:
/usr/include/c++/9/bits/regex.h:1048:5: note: candidate: 'template<class _BiIter> bool std::__cxx11::operator<(const std::__cxx11::sub_match<_BiIter>&, const std::__cxx11::sub_match<_BiIter>&)'
 1048 |     operator<(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/9/bits/regex.h:1048:5: note:   template argument deduction/substitution failed:
supertrees.cpp:91:23: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'int'
   91 |     for(int j=0;j<ch[i];j++){
      |                       ^
In file included from /usr/include/c++/9/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:110,
                 from supertrees.cpp:1:
/usr/include/c++/9/bits/regex.h:1124:5: note: candidate: 'template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator<(std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&, const std::__cxx11::sub_match<_BiIter>&)'
 1124 |     operator<(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/9/bits/regex.h:1124:5: note:   template argument deduction/substitution failed:
supertrees.cpp:91:23: note:   mismatched types 'std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>' and 'int'
   91 |     for(int j=0;j<ch[i];j++){
      |                       ^
In file included from /usr/include/c++/9/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:110,
                 from supertrees.cpp:1:
/usr/include/c++/9/bits/regex.h:1198:5: note: candidate: 'template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator<(const std::__cxx11::sub_match<_BiIter>&, std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&)'
 1198 |     operator<(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/9/bits/regex.h:1198:5: note:   template argument deduction/substitution failed:
supertrees.cpp:91:23: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'int'
   91 |     for(int j=0;j<ch[i];j++){
      |                       ^
In file included from /usr/include/c++/9/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:110,
                 from supertrees.cpp:1:
/usr/include/c++/9/bits/regex.h:1272:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator<(const typename std::iterator_traits<_Iter>::value_type*, const std::__cxx11::sub_match<_BiIter>&)'
 1272 |     operator<(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
      |     ^~~~~~~~
/usr/include/c++/9/bits/regex.h:1272:5: note:   template argument deduction/substitution failed:
supertrees.cpp:91:23: note:   'std::vector<int>' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   91 |     for(int j=0;j<ch[i];j++){
      |                       ^
In file included from /usr/include/c++/9/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:110,
                 from supertrees.cpp:1:
/usr/include/c++/9/bits/regex.h:1346:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator<(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type*)'
 1346 |     operator<(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/9/bits/regex.h:1346:5: note:   template argument deduction/substitution failed:
supertrees.cpp:91:23: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'int'
   91 |     for(int j=0;j<ch[i];j++){
      |                       ^
In file included from /usr/include/c++/9/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:110,
                 from supertrees.cpp:1:
/usr/include/c++/9/bits/regex.h:1421:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator<(const typename std::iterator_traits<_Iter>::value_type&, const std::__cxx11::sub_match<_BiIter>&)'
 1421 |     operator<(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
      |     ^~~~~~~~
/usr/include/c++/9/bits/regex.h:1421:5: note:   template argument deduction/substitution failed:
supertrees.cpp:91:23: note:   'std::vector<int>' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   91 |     for(int j=0;j<ch[i];j++){
      |                       ^
In file included from /usr/include/c++/9/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:110,
                 from supertrees.cpp:1:
/usr/include/c++/9/bits/regex.h:1499:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator<(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type&)'
 1499 |     operator<(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/9/bits/regex.h:1499:5: note:   template argument deduction/substitution failed:
supertrees.cpp:91:23: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'int'
   91 |     for(int j=0;j<ch[i];j++){
      |                       ^
In file included from /usr/include/c++/9/bits/stl_algobase.h:64,
                 from /usr/include/c++/9/bits/char_traits.h:39,
                 from /usr/include/c++/9/ios:40,
                 from /usr/include/c++/9/istream:38,
                 from /usr/include/c++/9/sstream:38,
                 from /usr/include/c++/9/complex:45,
                 from /usr/include/c++/9/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
                 from supertrees.cpp:1:
/usr/include/c++/9/bits/stl_pair.h:454:5: note: candidate: 'template<class _T1, class _T2> constexpr bool std::operator<(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&)'
  454 |     operator<(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
      |     ^~~~~~~~
/usr/include/c++/9/bits/stl_pair.h:454:5: note:   template argument deduction/substitution failed:
supertrees.cpp:91:23: note:   mismatched types 'const std::pair<_T1, _T2>' and 'int'
   91 |     for(int j=0;j<ch[i];j++){
      |                       ^
In file included from /usr/include/c++/9/bits/stl_algobase.h:67,
                 from /usr/include/c++/9/bits/char_traits.h:39,
                 from /usr/include/c++/9/ios:40,
                 from /usr/include/c++/9/istream:38,
                 from /usr/include/c++/9/sstream:38,
                 from /usr/include/c++/9/complex:45,
                 from /usr/include/c++/9/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
                 from supertrees.cpp:1:
/usr/include/c++/9/bits/stl_iterator.h:331:5: note: candidate: 'template<class _Iterator> bool std::operator<(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&)'
  331 |     operator<(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/9/bits/stl_iterator.h:331:5: note:   template argument deduction/substitution failed:
supertrees.cpp:91:23: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'int'
   91 |     for(int j=0;j<ch[i];j++){
      |                       ^
In file included from /usr/include/c++/9/bits/stl_algobase.h:67,
                 from /usr/include/c++/9/bits/char_traits.h:39,
                 from /usr/include/c++/9/ios:40,
                 from /usr/include/c++/9/istream:38,
                 from /usr/include/c++/9/sstream:38,
                 from /usr/include/c++/9/complex:45,
                 from /usr/include/c++/9/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
                 from supertrees.cpp:1:
/usr/include/c++/9/bits/stl_iterator.h:369:5: note: candidate: 'template<class _IteratorL, class _IteratorR> bool std::operator<(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_IteratorR>&)'
  369 |     operator<(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/9/bits/stl_iterator.h:369:5: note:   template argument deduction/substitution failed:
supertrees.cpp:91:23: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'int'
   91 |     for(int j=0;j<ch[i];j++){
      |                       ^
In file included from /usr/include/c++/9/bits/stl_algobase.h:67,
                 from /usr/include/c++/9/bits/char_traits.h:39,
                 from /usr/include/c++/9/ios:40,
                 from /usr/include/c++/9/istream:38,
                 from /usr/include/c++/9/sstream:38,
                 from /usr/include/c++/9/complex:45,
                 from /usr/include/c++/9/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
                 from supertrees.cpp:1:
/usr/include/c++/9/bits/stl_iterator.h:1163:5: note: candidate: 'template<class _IteratorL, class _IteratorR> bool std::operator<(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorR>&)'
 1163 |     operator<(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/9/bits/stl_iterator.h:1163:5: note:   template argument deduction/substitution failed:
supertrees.cpp:91:23: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'int'
   91 |     for(int j=0;j<ch[i];j++){
      |                       ^
In file included from /usr/include/c++/9/bits/stl_algobase.h:67,
                 from /usr/include/c++/9/bits/char_traits.h:39,
                 from /usr/include/c++/9/ios:40,
                 from /usr/include/c++/9/istream:38,
                 from /usr/include/c++/9/sstream:38,
                 from /usr/include/c++/9/complex:45,
                 from /usr/include/c++/9/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
                 from supertrees.cpp:1:
/usr/include/c++/9/bits/stl_iterator.h:1169:5: note: candidate: 'template<class _Iterator> bool std::operator<(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorL>&)'
 1169 |     operator<(const move_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/9/bits/stl_iterator.h:1169:5: note:   template argument deduction/substitution failed:
supertrees.cpp:91:23: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'int'
   91 |     for(int j=0;j<ch[i];j++){
      |                       ^
In file included from /usr/include/c++/9/string:55,
                 from /usr/include/c++/9/bits/locale_classes.h:40,
                 from /usr/include/c++/9/bits/ios_base.h:41,
                 from /usr/include/c++/9/ios:42,
                 from /usr/include/c++/9/istream:38,
                 from /usr/include/c++/9/sstream:38,
                 from /usr/include/c++/9/complex:45,
                 from /usr/include/c++/9/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
                 from supertrees.cpp:1:
/usr/include/c++/9/bits/basic_string.h:6226:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator<(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&, const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&)'
 6226 |     operator<(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/9/bits/basic_string.h:6226:5: note:   template argument deduction/substitution failed:
supertrees.cpp:91:23: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>' and 'int'
   91 |     for(int j=0;j<ch[i];j++){
      |                       ^
In file included from /usr/include/c++/9/string:55,
                 from /usr/include/c++/9/bits/locale_classes.h:40,
                 from /usr/include/c++/9/bits/ios_base.h:41,
                 from /usr/include/c++/9/ios:42,
                 from /usr/include/c++/9/istream:38,
                 from /usr/include/c++/9/sstream:38,
                 from /usr/include/c++/9/complex:45,
                 from /usr/include/c++/9/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
                 from supertrees.cpp:1:
/usr/include/c++/9/bits/basic_string.h:6239:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator<(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*)'
 6239 |     operator<(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/9/bits/basic_string.h:6239:5: note:   template argument deduction/substitution failed:
supertrees.cpp:91:23: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>' and 'int'
   91 |     for(int j=0;j<ch[i];j++){
      |                       ^
In file included from /usr/include/c++/9/string:55,
                 from /usr/include/c++/9/bits/locale_classes.h:40,
                 from /usr/include/c++/9/bits/ios_base.h:41,
                 from /usr/include/c++/9/ios:42,
                 from /usr/include/c++/9/istream:38,
                 from /usr/include/c++/9/sstream:38,
                 from /usr/include/c++/9/complex:45,
                 from /usr/include/c++/9/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
                 from supertrees.cpp:1:
/usr/include/c++/9/bits/basic_string.h:6251:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator<(const _CharT*, const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&)'
 6251 |     operator<(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/9/bits/basic_string.h:6251:5: note:   template argument deduction/substitution failed:
supertrees.cpp:91:23: note:   mismatched types 'const _CharT*' and 'int'
   91 |     for(int j=0;j<ch[i];j++){
      |                       ^
In file included from /usr/include/c++/9/bits/ios_base.h:46,
                 from /usr/include/c++/9/ios:42,
                 from /usr/include/c++/9/istream:38,
                 from /usr/include/c++/9/sstream:38,
                 from /usr/include/c++/9/complex:45,
                 from /usr/include/c++/9/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
                 from supertrees.cpp:1:
/usr/include/c++/9/system_error:208:3: note: candidate: 'bool std::operator<(const std::error_code&, const std::error_code&)'
  208 |   operator<(const error_code& __lhs, const error_code& __rhs) noexcept
      |   ^~~~~~~~
/usr/include/c++/9/system_error:208:31: note:   no known conversion for argument 1 from 'int' to 'const std::error_code&'
  208 |   operator<(const error_code& __lhs, const error_code& __rhs) noexcept
      |             ~~~~~~~~~~~~~~~~~~^~~~~
/usr/include/c++/9/system_error:282:3: note: candidate: 'bool std::operator<(const std::error_condition&, const std::error_condition&)'
  282 |   operator<(const error_condition& __lhs,
      |   ^~~~~~~~
/usr/include/c++/9/system_error:282:36: note:   no known conversion for argument 1 from 'int' to 'const std::error_condition&'
  282 |   operator<(const error_condition& __lhs,
      |             ~~~~~~~~~~~~~~~~~~~~~~~^~~~~
In file included from /usr/include/c++/9/deque:67,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:68,
                 from supertrees.cpp:1:
/usr/include/c++/9/bits/stl_deque.h:312:5: note: candidate: 'template<class _Tp, class _Ref, class _Ptr> bool std::operator<(const std::_Deque_iterator<_Tp, _Ref, _Ptr>&, const std::_Deque_iterator<_Tp, _Ref, _Ptr>&)'
  312 |     operator<(const _Deque_iterator<_Tp, _Ref, _Ptr>& __x,
      |     ^~~~~~~~
/usr/include/c++/9/bits/stl_deque.h:312:5: note:   template argument deduction/substitution failed:
supertrees.cpp:91:23: note:   mismatched types 'const std::_Deque_iterator<_Tp, _Ref, _Ptr>' and 'int'
   91 |     for(int j=0;j<ch[i];j++){
      |                       ^
In file included from /usr/include/c++/9/deque:67,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:68,
                 from supertrees.cpp:1:
/usr/include/c++/9/bits/stl_deque.h:320:5: note: candidate: 'template<class _Tp, class _RefL, class _PtrL, class _RefR, class _PtrR> bool std::operator<(const std::_Deque_iterator<_Tp, _Ref, _Ptr>&, const std::_Deque_iterator<_Tp, _RefR, _PtrR>&)'
  320 |     operator<(const _Deque_iterator<_Tp, _RefL, _PtrL>& __x,
      |     ^~~~~~~~
/usr/include/c++/9/bits/stl_deque.h:320:5: note:   template argument deduction/substitution failed:
supertrees.cpp:91:23: note:   mismatched types 'const std::_Deque_iterator<_Tp, _Ref, _Ptr>' and 'int'
   91 |     for(int j=0;j<ch[i];j++){
      |                       ^
In file included from /usr/include/c++/9/deque:67,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:68,
                 from supertrees.cpp:1:
/usr/include/c++/9/bits/stl_deque.h:2330:5: note: candidate: 'template<class _Tp, class _Alloc> bool std::operator<(const std::deque<_Tp, _Alloc>&, const std::deque<_Tp, _Alloc>&)'
 2330 |     operator<(const deque<_Tp, _Alloc>& __x,
      |     ^~~~~~~~
/usr/include/c++/9/bits/stl_deque.h:2330:5: note:   template argument deduction/substitution failed:
supertrees.cpp:91:23: note:   mismatched types 'const std::deque<_Tp, _Alloc>' and 'int'
   91 |     for(int j=0;j<ch[i];j++){
      |                       ^
In file included from /usr/include/c++/9/tuple:39,
                 from /usr/include/c++/9/functional:54,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:71,
                 from supertrees.cpp:1:
/usr/include/c++/9/array:262:5: note: candidate: 'template<class _Tp, long unsigned int _Nm> bool std::operator<(const std::array<_Tp, _Nm>&, const std::array<_Tp, _Nm>&)'
  262 |     operator<(const array<_Tp, _Nm>& __a, const array<_Tp, _Nm>& __b)
      |     ^~~~~~~~
/usr/include/c++/9/array:262:5: note:   template argument deduction/substitution failed:
supertrees.cpp:91:23: note:   mismatched types 'const std::array<_Tp, _Nm>' and 'int'
   91 |     for(int j=0;j<ch[i];j++){
      |                       ^
In file included from /usr/include/c++/9/functional:54,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:71,
                 from supertrees.cpp:1:
/usr/include/c++/9/tuple:1432:5: note: candidate: 'template<class ... _TElements, class ... _UElements> constexp