answer.code: In function ‘int qry(int, int, int)’:
answer.code:119:46: error: no match for ‘operator<’ (operand types are ‘std::basic_ostream<char>’ and ‘const char [2]’)
  119 |                 int t;cout<<x<<" "<<y<<" "<<z<"\n";
      |                       ~~~~~~~~~~~~~~~~~~~~~~~^~~~~
      |                                           |   |
      |                                           |   const char [2]
      |                                           std::basic_ostream<char>
In file included from /usr/include/c++/11/bits/stl_algobase.h:64,
                 from /usr/include/c++/11/bits/char_traits.h:39,
                 from /usr/include/c++/11/string:40,
                 from answer.code:4:
/usr/include/c++/11/bits/stl_pair.h:489:5: note: candidate: ‘template<class _T1, class _T2> constexpr bool std::operator<(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&)’
  489 |     operator<(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
      |     ^~~~~~~~
/usr/include/c++/11/bits/stl_pair.h:489:5: note:   template argument deduction/substitution failed:
answer.code:119:47: note:   ‘std::basic_ostream<char>’ is not derived from ‘const std::pair<_T1, _T2>’
  119 |                 int t;cout<<x<<" "<<y<<" "<<z<"\n";
      |                                               ^~~~
In file included from /usr/include/c++/11/bits/stl_algobase.h:67,
                 from /usr/include/c++/11/bits/char_traits.h:39,
                 from /usr/include/c++/11/string:40,
                 from answer.code:4:
/usr/include/c++/11/bits/stl_iterator.h:422:5: note: candidate: ‘template<class _Iterator> bool std::operator<(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&)’
  422 |     operator<(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/11/bits/stl_iterator.h:422:5: note:   template argument deduction/substitution failed:
answer.code:119:47: note:   ‘std::basic_ostream<char>’ is not derived from ‘const std::reverse_iterator<_Iterator>’
  119 |                 int t;cout<<x<<" "<<y<<" "<<z<"\n";
      |                                               ^~~~
In file included from /usr/include/c++/11/bits/stl_algobase.h:67,
                 from /usr/include/c++/11/bits/char_traits.h:39,
                 from /usr/include/c++/11/string:40,
                 from answer.code:4:
/usr/include/c++/11/bits/stl_iterator.h:461:5: note: candidate: ‘template<class _IteratorL, class _IteratorR> bool std::operator<(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_IteratorR>&)’
  461 |     operator<(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/11/bits/stl_iterator.h:461:5: note:   template argument deduction/substitution failed:
answer.code:119:47: note:   ‘std::basic_ostream<char>’ is not derived from ‘const std::reverse_iterator<_Iterator>’
  119 |                 int t;cout<<x<<" "<<y<<" "<<z<"\n";
      |                                               ^~~~
In file included from /usr/include/c++/11/bits/stl_algobase.h:67,
                 from /usr/include/c++/11/bits/char_traits.h:39,
                 from /usr/include/c++/11/string:40,
                 from answer.code:4:
/usr/include/c++/11/bits/stl_iterator.h:1557:5: note: candidate: ‘template<class _IteratorL, class _IteratorR> bool std::operator<(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorR>&)’
 1557 |     operator<(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/11/bits/stl_iterator.h:1557:5: note:   template argument deduction/substitution failed:
answer.code:119:47: note:   ‘std::basic_ostream<char>’ is not derived from ‘const std::move_iterator<_IteratorL>’
  119 |                 int t;cout<<x<<" "<<y<<" "<<z<"\n";
      |                                               ^~~~
In file included from /usr/include/c++/11/bits/stl_algobase.h:67,
                 from /usr/include/c++/11/bits/char_traits.h:39,
                 from /usr/include/c++/11/string:40,
                 from answer.code:4:
/usr/include/c++/11/bits/stl_iterator.h:1613:5: note: candidate: ‘template<class _Iterator> bool std::operator<(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorL>&)’
 1613 |     operator<(const move_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/11/bits/stl_iterator.h:1613:5: note:   template argument deduction/substitution failed:
answer.code:119:47: note:   ‘std::basic_ostream<char>’ is not derived from ‘const std::move_iterator<_IteratorL>’
  119 |                 int t;cout<<x<<" "<<y<<" "<<z<"\n";
      |                                               ^~~~
In file included from /usr/include/c++/11/string:55,
                 from answer.code:4:
/usr/include/c++/11/bits/basic_string.h:6326:5: note: candidate: ‘template<class _CharT, class _Traits, class _Alloc> bool std::operator<(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&, const std::__cxx11::basic_st...