运行 ID: 108770

Main.cc: In function ‘int main()’:
Main.cc:41:16: error: no match for ‘operator>’ (operand types are ‘node’ and ‘int’)
   else if(a[i] > jun)
           ~~~~~^~~~~
In file included from /usr/include/c++/7/regex:62:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:110,
                 from Main.cc:1:
/usr/include/c++/7/bits/regex.h:1037:5: note: candidate: template bool std::__cxx11::operator>(const std::__cxx11::sub_match<_BiIter>&, const std::__cxx11::sub_match<_BiIter>&)
     operator>(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
     ^~~~~~~~
/usr/include/c++/7/bits/regex.h:1037:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::__cxx11::sub_match<_BiIter>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/regex:62:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:110,
                 from Main.cc:1:
/usr/include/c++/7/bits/regex.h:1098:5: note: candidate: template bool std::__cxx11::operator>(std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&, const std::__cxx11::sub_match<_BiIter>&)
     operator>(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
     ^~~~~~~~
/usr/include/c++/7/bits/regex.h:1098:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/regex:62:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:110,
                 from Main.cc:1:
/usr/include/c++/7/bits/regex.h:1178:5: note: candidate: template bool std::__cxx11::operator>(const std::__cxx11::sub_match<_BiIter>&, std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&)
     operator>(const sub_match<_Bi_iter>& __lhs,
     ^~~~~~~~
/usr/include/c++/7/bits/regex.h:1178:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::__cxx11::sub_match<_BiIter>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/regex:62:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:110,
                 from Main.cc:1:
/usr/include/c++/7/bits/regex.h:1252:5: note: candidate: template bool std::__cxx11::operator>(const typename std::iterator_traits<_Iter>::value_type*, const std::__cxx11::sub_match<_BiIter>&)
     operator>(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
     ^~~~~~~~
/usr/include/c++/7/bits/regex.h:1252:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   mismatched types ‘const std::__cxx11::sub_match<_BiIter>’ and ‘int’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/regex:62:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:110,
                 from Main.cc:1:
/usr/include/c++/7/bits/regex.h:1326:5: note: candidate: template bool std::__cxx11::operator>(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type*)
     operator>(const sub_match<_Bi_iter>& __lhs,
     ^~~~~~~~
/usr/include/c++/7/bits/regex.h:1326:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::__cxx11::sub_match<_BiIter>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/regex:62:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:110,
                 from Main.cc:1:
/usr/include/c++/7/bits/regex.h:1406:5: note: candidate: template bool std::__cxx11::operator>(const typename std::iterator_traits<_Iter>::value_type&, const std::__cxx11::sub_match<_BiIter>&)
     operator>(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
     ^~~~~~~~
/usr/include/c++/7/bits/regex.h:1406:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   mismatched types ‘const std::__cxx11::sub_match<_BiIter>’ and ‘int’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/regex:62:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:110,
                 from Main.cc:1:
/usr/include/c++/7/bits/regex.h:1486:5: note: candidate: template bool std::__cxx11::operator>(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type&)
     operator>(const sub_match<_Bi_iter>& __lhs,
     ^~~~~~~~
/usr/include/c++/7/bits/regex.h:1486:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::__cxx11::sub_match<_BiIter>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/future:39:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:105,
                 from Main.cc:1:
/usr/include/c++/7/thread:293:3: note: candidate: bool std::operator>(std::thread::id, std::thread::id)
   operator>(thread::id __x, thread::id __y) noexcept
   ^~~~~~~~
/usr/include/c++/7/thread:293:3: note:   no known conversion for argument 1 from ‘node’ to ‘std::thread::id’
In file included from /usr/include/c++/7/forward_list:38:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:104,
                 from Main.cc:1:
/usr/include/c++/7/bits/forward_list.h:1403:5: note: candidate: template bool std::operator>(const std::forward_list<_Tp, _Alloc>&, const std::forward_list<_Tp, _Alloc>&)
     operator>(const forward_list<_Tp, _Alloc>& __lx,
     ^~~~~~~~
/usr/include/c++/7/bits/forward_list.h:1403:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::forward_list<_Tp, _Alloc>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:95:0,
                 from Main.cc:1:
/usr/include/c++/7/valarray:1187:1: note: candidate: template std::_Expr, typename std::__fun::result_type> std::operator>(const _Tp&, const std::valarray<_Tp>&)
 _DEFINE_BINARY_OPERATOR(>, __greater)
 ^
/usr/include/c++/7/valarray:1187:1: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   mismatched types ‘const std::valarray<_Tp>’ and ‘int’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:95:0,
                 from Main.cc:1:
/usr/include/c++/7/valarray:1187:1: note: candidate: template std::_Expr, typename std::__fun::result_type> std::operator>(const std::valarray<_Tp>&, const _Tp&)
 _DEFINE_BINARY_OPERATOR(>, __greater)
 ^
/usr/include/c++/7/valarray:1187:1: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::valarray<_Tp>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:95:0,
                 from Main.cc:1:
/usr/include/c++/7/valarray:1187:1: note: candidate: template std::_Expr, typename std::__fun::result_type> std::operator>(const std::valarray<_Tp>&, const std::valarray<_Tp>&)
 _DEFINE_BINARY_OPERATOR(>, __greater)
 ^
/usr/include/c++/7/valarray:1187:1: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::valarray<_Tp>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/valarray:592:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:95,
                 from Main.cc:1:
/usr/include/c++/7/bits/valarray_after.h:417:5: note: candidate: template std::_Expr, typename std::__fun::result_type> std::operator>(const std::valarray&, const std::_Expr<_Dom1, typename _Dom1::value_type>&)
     _DEFINE_EXPR_BINARY_OPERATOR(>, __greater)
     ^
/usr/include/c++/7/bits/valarray_after.h:417:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   mismatched types ‘const std::_Expr<_Dom1, typename _Dom1::value_type>’ and ‘int’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/valarray:592:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:95,
                 from Main.cc:1:
/usr/include/c++/7/bits/valarray_after.h:417:5: note: candidate: template std::_Expr, typename std::__fun::result_type> std::operator>(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const std::valarray&)
     _DEFINE_EXPR_BINARY_OPERATOR(>, __greater)
     ^
/usr/include/c++/7/bits/valarray_after.h:417:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::_Expr<_Dom1, typename _Dom1::value_type>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/valarray:592:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:95,
                 from Main.cc:1:
/usr/include/c++/7/bits/valarray_after.h:417:5: note: candidate: template std::_Expr, typename std::__fun::result_type> std::operator>(const typename _Dom::value_type&, const std::_Expr<_Dom1, typename _Dom1::value_type>&)
     _DEFINE_EXPR_BINARY_OPERATOR(>, __greater)
     ^
/usr/include/c++/7/bits/valarray_after.h:417:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   mismatched types ‘const std::_Expr<_Dom1, typename _Dom1::value_type>’ and ‘int’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/valarray:592:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:95,
                 from Main.cc:1:
/usr/include/c++/7/bits/valarray_after.h:417:5: note: candidate: template std::_Expr, typename std::__fun::result_type> std::operator>(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const typename _Dom::value_type&)
     _DEFINE_EXPR_BINARY_OPERATOR(>, __greater)
     ^
/usr/include/c++/7/bits/valarray_after.h:417:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::_Expr<_Dom1, typename _Dom1::value_type>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/valarray:592:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:95,
                 from Main.cc:1:
/usr/include/c++/7/bits/valarray_after.h:417:5: note: candidate: template std::_Expr, typename std::__fun::result_type> std::operator>(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const std::_Expr<_Dom2, typename _Dom2::value_type>&)
     _DEFINE_EXPR_BINARY_OPERATOR(>, __greater)
     ^
/usr/include/c++/7/bits/valarray_after.h:417:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::_Expr<_Dom1, typename _Dom1::value_type>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/stack:61:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:89,
                 from Main.cc:1:
/usr/include/c++/7/bits/stl_stack.h:323:5: note: candidate: template bool std::operator>(const std::stack<_Tp, _Seq>&, const std::stack<_Tp, _Seq>&)
     operator>(const stack<_Tp, _Seq>& __x, const stack<_Tp, _Seq>& __y)
     ^~~~~~~~
/usr/include/c++/7/bits/stl_stack.h:323:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::stack<_Tp, _Seq>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/set:62:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:87,
                 from Main.cc:1:
/usr/include/c++/7/bits/stl_multiset.h:927:5: note: candidate: template bool std::operator>(const std::multiset<_Key, _Compare, _Alloc>&, const std::multiset<_Key, _Compare, _Alloc>&)
     operator>(const multiset<_Key,_Compare,_Alloc>& __x,
     ^~~~~~~~
/usr/include/c++/7/bits/stl_multiset.h:927:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::multiset<_Key, _Compare, _Alloc>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/set:61:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:87,
                 from Main.cc:1:
/usr/include/c++/7/bits/stl_set.h:944:5: note: candidate: template bool std::operator>(const std::set<_Key, _Compare, _Alloc>&, const std::set<_Key, _Compare, _Alloc>&)
     operator>(const set<_Key, _Compare, _Alloc>& __x,
     ^~~~~~~~
/usr/include/c++/7/bits/stl_set.h:944:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::set<_Key, _Compare, _Alloc>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/queue:64:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:86,
                 from Main.cc:1:
/usr/include/c++/7/bits/stl_queue.h:348:5: note: candidate: template bool std::operator>(const std::queue<_Tp, _Seq>&, const std::queue<_Tp, _Seq>&)
     operator>(const queue<_Tp, _Seq>& __x, const queue<_Tp, _Seq>& __y)
     ^~~~~~~~
/usr/include/c++/7/bits/stl_queue.h:348:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::queue<_Tp, _Seq>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/vector:64:0,
                 from /usr/include/c++/7/queue:61,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:86,
                 from Main.cc:1:
/usr/include/c++/7/bits/stl_vector.h:1631:5: note: candidate: template bool std::operator>(const std::vector<_Tp, _Alloc>&, const std::vector<_Tp, _Alloc>&)
     operator>(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y)
     ^~~~~~~~
/usr/include/c++/7/bits/stl_vector.h:1631:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::vector<_Tp, _Alloc>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/memory:81:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:82,
                 from Main.cc:1:
/usr/include/c++/7/bits/shared_ptr.h:449:5: note: candidate: template bool std::operator>(std::nullptr_t, const std::shared_ptr<_Tp>&)
     operator>(nullptr_t, const shared_ptr<_Tp>& __a) noexcept
     ^~~~~~~~
/usr/include/c++/7/bits/shared_ptr.h:449:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   mismatched types ‘const std::shared_ptr<_Tp>’ and ‘int’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/memory:81:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:82,
                 from Main.cc:1:
/usr/include/c++/7/bits/shared_ptr.h:444:5: note: candidate: template bool std::operator>(const std::shared_ptr<_Tp>&, std::nullptr_t)
     operator>(const shared_ptr<_Tp>& __a, nullptr_t) noexcept
     ^~~~~~~~
/usr/include/c++/7/bits/shared_ptr.h:444:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::shared_ptr<_Tp>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/memory:81:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:82,
                 from Main.cc:1:
/usr/include/c++/7/bits/shared_ptr.h:439:5: note: candidate: template bool std::operator>(const std::shared_ptr<_Tp>&, const std::shared_ptr<_Up>&)
     operator>(const shared_ptr<_Tp>& __a, const shared_ptr<_Up>& __b) noexcept
     ^~~~~~~~
/usr/include/c++/7/bits/shared_ptr.h:439:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::shared_ptr<_Tp>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/bits/shared_ptr.h:52:0,
                 from /usr/include/c++/7/memory:81,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:82,
                 from Main.cc:1:
/usr/include/c++/7/bits/shared_ptr_base.h:1495:5: note: candidate: template bool std::operator>(std::nullptr_t, const std::__shared_ptr<_Tp, _Lp>&)
     operator>(nullptr_t, const __shared_ptr<_Tp, _Lp>& __a) noexcept
     ^~~~~~~~
/usr/include/c++/7/bits/shared_ptr_base.h:1495:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   mismatched types ‘const std::__shared_ptr<_Tp, _Lp>’ and ‘int’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/bits/shared_ptr.h:52:0,
                 from /usr/include/c++/7/memory:81,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:82,
                 from Main.cc:1:
/usr/include/c++/7/bits/shared_ptr_base.h:1490:5: note: candidate: template bool std::operator>(const std::__shared_ptr<_Tp, _Lp>&, std::nullptr_t)
     operator>(const __shared_ptr<_Tp, _Lp>& __a, nullptr_t) noexcept
     ^~~~~~~~
/usr/include/c++/7/bits/shared_ptr_base.h:1490:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::__shared_ptr<_Tp, _Lp>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/bits/shared_ptr.h:52:0,
                 from /usr/include/c++/7/memory:81,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:82,
                 from Main.cc:1:
/usr/include/c++/7/bits/shared_ptr_base.h:1484:5: note: candidate: template bool std::operator>(const std::__shared_ptr<_Tp1, _Lp>&, const std::__shared_ptr<_Tp2, _Lp>&)
     operator>(const __shared_ptr<_Tp1, _Lp>& __a,
     ^~~~~~~~
/usr/include/c++/7/bits/shared_ptr_base.h:1484:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::__shared_ptr<_Tp1, _Lp>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/map:62:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:81,
                 from Main.cc:1:
/usr/include/c++/7/bits/stl_multimap.h:1090:5: note: candidate: template bool std::operator>(const std::multimap<_Key, _Tp, _Compare, _Alloc>&, const std::multimap<_Key, _Tp, _Compare, _Alloc>&)
     operator>(const multimap<_Key, _Tp, _Compare, _Alloc>& __x,
     ^~~~~~~~
/usr/include/c++/7/bits/stl_multimap.h:1090:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::multimap<_Key, _Tp, _Compare, _Alloc>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/map:61:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:81,
                 from Main.cc:1:
/usr/include/c++/7/bits/stl_map.h:1425:5: note: candidate: template bool std::operator>(const std::map<_Key, _Tp, _Compare, _Alloc>&, const std::map<_Key, _Tp, _Compare, _Alloc>&)
     operator>(const map<_Key, _Tp, _Compare, _Alloc>& __x,
     ^~~~~~~~
/usr/include/c++/7/bits/stl_map.h:1425:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::map<_Key, _Tp, _Compare, _Alloc>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/map:60:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:81,
                 from Main.cc:1:
/usr/include/c++/7/bits/stl_tree.h:1560:5: note: candidate: template bool std::operator>(const std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>&, const std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>&)
     operator>(const _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>& __x,
     ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1560:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/list:63:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:79,
                 from Main.cc:1:
/usr/include/c++/7/bits/stl_list.h:1931:5: note: candidate: template bool std::operator>(const std::__cxx11::list<_Tp, _Alloc>&, const std::__cxx11::list<_Tp, _Alloc>&)
     operator>(const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y)
     ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:1931:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::__cxx11::list<_Tp, _Alloc>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/bits/locale_conv.h:41:0,
                 from /usr/include/c++/7/locale:43,
                 from /usr/include/c++/7/iomanip:43,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:72,
                 from Main.cc:1:
/usr/include/c++/7/bits/unique_ptr.h:766:5: note: candidate: template bool std::operator>(std::nullptr_t, const std::unique_ptr<_Tp, _Dp>&)
     operator>(nullptr_t, const unique_ptr<_Tp, _Dp>& __x)
     ^~~~~~~~
/usr/include/c++/7/bits/unique_ptr.h:766:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   mismatched types ‘const std::unique_ptr<_Tp, _Dp>’ and ‘int’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/bits/locale_conv.h:41:0,
                 from /usr/include/c++/7/locale:43,
                 from /usr/include/c++/7/iomanip:43,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:72,
                 from Main.cc:1:
/usr/include/c++/7/bits/unique_ptr.h:760:5: note: candidate: template bool std::operator>(const std::unique_ptr<_Tp, _Dp>&, std::nullptr_t)
     operator>(const unique_ptr<_Tp, _Dp>& __x, nullptr_t)
     ^~~~~~~~
/usr/include/c++/7/bits/unique_ptr.h:760:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::unique_ptr<_Tp, _Dp>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/bits/locale_conv.h:41:0,
                 from /usr/include/c++/7/locale:43,
                 from /usr/include/c++/7/iomanip:43,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:72,
                 from Main.cc:1:
/usr/include/c++/7/bits/unique_ptr.h:754:5: note: candidate: template bool std::operator>(const std::unique_ptr<_Tp, _Dp>&, const std::unique_ptr<_Up, _Ep>&)
     operator>(const unique_ptr<_Tp, _Dp>& __x,
     ^~~~~~~~
/usr/include/c++/7/bits/unique_ptr.h:754:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::unique_ptr<_Tp, _Dp>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/functional:54:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:71,
                 from Main.cc:1:
/usr/include/c++/7/tuple:1429:5: note: candidate: template constexpr bool std::operator>(const std::tuple<_Tps ...>&, const std::tuple<_Elements ...>&)
     operator>(const tuple<_TElements...>& __t,
     ^~~~~~~~
/usr/include/c++/7/tuple:1429:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::tuple<_Tps ...>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/tuple:39:0,
                 from /usr/include/c++/7/functional:54,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:71,
                 from Main.cc:1:
/usr/include/c++/7/array:270:5: note: candidate: template bool std::operator>(const std::array<_Tp, _Nm>&, const std::array<_Tp, _Nm>&)
     operator>(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
     ^~~~~~~~
/usr/include/c++/7/array:270:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::array<_Tp, _Nm>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/deque:64:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:68,
                 from Main.cc:1:
/usr/include/c++/7/bits/stl_deque.h:2291:5: note: candidate: template bool std::operator>(const std::deque<_Tp, _Alloc>&, const std::deque<_Tp, _Alloc>&)
     operator>(const deque<_Tp, _Alloc>& __x,
     ^~~~~~~~
/usr/include/c++/7/bits/stl_deque.h:2291:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::deque<_Tp, _Alloc>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/deque:64:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:68,
                 from Main.cc:1:
/usr/include/c++/7/bits/stl_deque.h:315:5: note: candidate: template bool std::operator>(const std::_Deque_iterator<_Tp, _Ref, _Ptr>&, const std::_Deque_iterator<_Tp, _RefR, _PtrR>&)
     operator>(const _Deque_iterator<_Tp, _RefL, _PtrL>& __x,
     ^~~~~~~~
/usr/include/c++/7/bits/stl_deque.h:315:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::_Deque_iterator<_Tp, _Ref, _Ptr>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/deque:64:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:68,
                 from Main.cc:1:
/usr/include/c++/7/bits/stl_deque.h:308:5: note: candidate: template bool std::operator>(const std::_Deque_iterator<_Tp, _Ref, _Ptr>&, const std::_Deque_iterator<_Tp, _Ref, _Ptr>&)
     operator>(const _Deque_iterator<_Tp, _Ref, _Ptr>& __x,
     ^~~~~~~~
/usr/include/c++/7/bits/stl_deque.h:308:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   ‘node’ is not derived from ‘const std::_Deque_iterator<_Tp, _Ref, _Ptr>’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from Main.cc:1:
/usr/include/c++/7/bits/basic_string.h:6157:5: note: candidate: template bool std::operator>(const _CharT*, const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&)
     operator>(const _CharT* __lhs,
     ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6157:5: note:   template argument deduction/substitution failed:
Main.cc:41:18: note:   mismatched types ‘const _CharT*’ and ‘node’
   else if(a[i] > jun)
                  ^~~
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,