In file included from /in/driver/main.cpp:8:0:
/in/kdtree.hpp: In member function 'KDTree<std::tuple<_Elements ...>, ValueType>::Node* KDTree<std::tuple<_Elements ...>, ValueType>::construct_helper(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >&, KDTree<std::tuple<_Elements ...>, ValueType>::Node*)':
/in/kdtree.hpp:350:66: error: 'compare_helper' was not declared in this scope
         std::nth_element(v.begin(), v.begin()+median+1, v.end(), compare_helper<DIM>);
                                                                  ^~~~~~~~~~~~~~
/in/kdtree.hpp:350:66: note: suggested alternative: 'copy_helper'
         std::nth_element(v.begin(), v.begin()+median+1, v.end(), compare_helper<DIM>);
                                                                  ^~~~~~~~~~~~~~
                                                                  copy_helper
/in/kdtree.hpp:350:85: error: expected primary-expression before ')' token
         std::nth_element(v.begin(), v.begin()+median+1, v.end(), compare_helper<DIM>);
                                                                                     ^
In file included from /usr/include/c++/7/bits/stl_algobase.h:71:0,
                 from /usr/include/c++/7/bits/char_traits.h:39,
                 from /usr/include/c++/7/string:40,
                 from /usr/include/c++/7/stdexcept:39,
                 from /usr/include/c++/7/array:39,
                 from /usr/include/c++/7/tuple:39,
                 from /in/kdtree.hpp:1,
                 from /in/driver/main.cpp:8:
/usr/include/c++/7/bits/predefined_ops.h: In instantiation of 'constexpr bool __gnu_cxx::__ops::_Iter_comp_iter<_Compare>::operator()(_Iterator1, _Iterator2) [with _Iterator1 = __gnu_cxx::__normal_iterator<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*, std::vector<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> > > >; _Iterator2 = __gnu_cxx::__normal_iterator<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*, std::vector<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> > > >; _Compare = KDTree<std::tuple<_Elements ...>, ValueType>::KDTree(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >) [with ValueType = std::__cxx11::basic_string<char>; KeyTypes = {int, int, int}]::<lambda(auto:1&, auto:2&)>]':
/usr/include/c++/7/bits/stl_algo.h:2487:14:   required from 'void std::__merge_without_buffer(_BidirectionalIterator, _BidirectionalIterator, _BidirectionalIterator, _Distance, _Distance, _Compare) [with _BidirectionalIterator = __gnu_cxx::__normal_iterator<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*, std::vector<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> > > >; _Distance = long int; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<KDTree<std::tuple<_Elements ...>, ValueType>::KDTree(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >) [with ValueType = std::__cxx11::basic_string<char>; KeyTypes = {int, int, int}]::<lambda(auto:1&, auto:2&)> >]'
/usr/include/c++/7/bits/stl_algo.h:2772:34:   required from 'void std::__inplace_stable_sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*, std::vector<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> > > >; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<KDTree<std::tuple<_Elements ...>, ValueType>::KDTree(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >) [with ValueType = std::__cxx11::basic_string<char>; KeyTypes = {int, int, int}]::<lambda(auto:1&, auto:2&)> >]'
/usr/include/c++/7/bits/stl_algo.h:5006:28:   required from 'void std::__stable_sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*, std::vector<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> > > >; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<KDTree<std::tuple<_Elements ...>, ValueType>::KDTree(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >) [with ValueType = std::__cxx11::basic_string<char>; KeyTypes = {int, int, int}]::<lambda(auto:1&, auto:2&)> >]'
/usr/include/c++/7/bits/stl_algo.h:5077:36:   required from 'void std::stable_sort(_RAIter, _RAIter, _Compare) [with _RAIter = __gnu_cxx::__normal_iterator<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*, std::vector<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> > > >; _Compare = KDTree<std::tuple<_Elements ...>, ValueType>::KDTree(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >) [with ValueType = std::__cxx11::basic_string<char>; KeyTypes = {int, int, int}]::<lambda(auto:1&, auto:2&)>]'
/in/kdtree.hpp:396:25:   required from 'KDTree<std::tuple<_Elements ...>, ValueType>::KDTree(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >) [with ValueType = std::__cxx11::basic_string<char>; KeyTypes = {int, int, int}]'
/in/driver/main.cpp:43:57:   required from here
/usr/include/c++/7/bits/predefined_ops.h:143:18: error: void value not ignored as it ought to be
         { return bool(_M_comp(*__it1, *__it2)); }
                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/predefined_ops.h: In instantiation of 'constexpr bool __gnu_cxx::__ops::_Iter_comp_iter<_Compare>::operator()(_Iterator1, _Iterator2) [with _Iterator1 = __gnu_cxx::__normal_iterator<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*, std::vector<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> > > >; _Iterator2 = std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*; _Compare = KDTree<std::tuple<_Elements ...>, ValueType>::KDTree(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >) [with ValueType = std::__cxx11::basic_string<char>; KeyTypes = {int, int, int}]::<lambda(auto:1&, auto:2&)>]':
/usr/include/c++/7/bits/stl_algo.h:2310:14:   required from 'void std::__move_merge_adaptive(_InputIterator1, _InputIterator1, _InputIterator2, _InputIterator2, _OutputIterator, _Compare) [with _InputIterator1 = std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*; _InputIterator2 = __gnu_cxx::__normal_iterator<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*, std::vector<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> > > >; _OutputIterator = __gnu_cxx::__normal_iterator<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*, std::vector<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> > > >; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<KDTree<std::tuple<_Elements ...>, ValueType>::KDTree(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >) [with ValueType = std::__cxx11::basic_string<char>; KeyTypes = {int, int, int}]::<lambda(auto:1&, auto:2&)> >]'
/usr/include/c++/7/bits/stl_algo.h:2425:30:   required from 'void std::__merge_adaptive(_BidirectionalIterator, _BidirectionalIterator, _BidirectionalIterator, _Distance, _Distance, _Pointer, _Distance, _Compare) [with _BidirectionalIterator = __gnu_cxx::__normal_iterator<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*, std::vector<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> > > >; _Distance = long int; _Pointer = std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<KDTree<std::tuple<_Elements ...>, ValueType>::KDTree(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >) [with ValueType = std::__cxx11::basic_string<char>; KeyTypes = {int, int, int}]::<lambda(auto:1&, auto:2&)> >]'
/usr/include/c++/7/bits/stl_algo.h:2751:28:   required from 'void std::__stable_sort_adaptive(_RandomAccessIterator, _RandomAccessIterator, _Pointer, _Distance, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*, std::vector<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> > > >; _Pointer = std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*; _Distance = long int; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<KDTree<std::tuple<_Elements ...>, ValueType>::KDTree(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >) [with ValueType = std::__cxx11::basic_string<char>; KeyTypes = {int, int, int}]::<lambda(auto:1&, auto:2&)> >]'
/usr/include/c++/7/bits/stl_algo.h:5008:29:   required from 'void std::__stable_sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*, std::vector<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> > > >; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<KDTree<std::tuple<_Elements ...>, ValueType>::KDTree(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >) [with ValueType = std::__cxx11::basic_string<char>; KeyTypes = {int, int, int}]::<lambda(auto:1&, auto:2&)> >]'
/usr/include/c++/7/bits/stl_algo.h:5077:36:   required from 'void std::stable_sort(_RAIter, _RAIter, _Compare) [with _RAIter = __gnu_cxx::__normal_iterator<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*, std::vector<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> > > >; _Compare = KDTree<std::tuple<_Elements ...>, ValueType>::KDTree(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >) [with ValueType = std::__cxx11::basic_string<char>; KeyTypes = {int, int, int}]::<lambda(auto:1&, auto:2&)>]'
/in/kdtree.hpp:396:25:   required from 'KDTree<std::tuple<_Elements ...>, ValueType>::KDTree(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >) [with ValueType = std::__cxx11::basic_string<char>; KeyTypes = {int, int, int}]'
/in/driver/main.cpp:43:57:   required from here
/usr/include/c++/7/bits/predefined_ops.h:143:18: error: void value not ignored as it ought to be
/usr/include/c++/7/bits/predefined_ops.h: In instantiation of 'constexpr bool __gnu_cxx::__ops::_Iter_comp_iter<_Compare>::operator()(_Iterator1, _Iterator2) [with _Iterator1 = std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*; _Iterator2 = __gnu_cxx::__normal_iterator<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*, std::vector<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> > > >; _Compare = KDTree<std::tuple<_Elements ...>, ValueType>::KDTree(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >) [with ValueType = std::__cxx11::basic_string<char>; KeyTypes = {int, int, int}]::<lambda(auto:1&, auto:2&)>]':
/usr/include/c++/7/bits/stl_algo.h:2349:14:   required from 'void std::__move_merge_adaptive_backward(_BidirectionalIterator1, _BidirectionalIterator1, _BidirectionalIterator2, _BidirectionalIterator2, _BidirectionalIterator3, _Compare) [with _BidirectionalIterator1 = __gnu_cxx::__normal_iterator<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*, std::vector<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> > > >; _BidirectionalIterator2 = std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*; _BidirectionalIterator3 = __gnu_cxx::__normal_iterator<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*, std::vector<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> > > >; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<KDTree<std::tuple<_Elements ...>, ValueType>::KDTree(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >) [with ValueType = std::__cxx11::basic_string<char>; KeyTypes = {int, int, int}]::<lambda(auto:1&, auto:2&)> >]'
/usr/include/c++/7/bits/stl_algo.h:2431:39:   required from 'void std::__merge_adaptive(_BidirectionalIterator, _BidirectionalIterator, _BidirectionalIterator, _Distance, _Distance, _Pointer, _Distance, _Compare) [with _BidirectionalIterator = __gnu_cxx::__normal_iterator<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*, std::vector<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> > > >; _Distance = long int; _Pointer = std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<KDTree<std::tuple<_Elements ...>, ValueType>::KDTree(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >) [with ValueType = std::__cxx11::basic_string<char>; KeyTypes = {int, int, int}]::<lambda(auto:1&, auto:2&)> >]'
/usr/include/c++/7/bits/stl_algo.h:2751:28:   required from 'void std::__stable_sort_adaptive(_RandomAccessIterator, _RandomAccessIterator, _Pointer, _Distance, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*, std::vector<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> > > >; _Pointer = std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*; _Distance = long int; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<KDTree<std::tuple<_Elements ...>, ValueType>::KDTree(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >) [with ValueType = std::__cxx11::basic_string<char>; KeyTypes = {int, int, int}]::<lambda(auto:1&, auto:2&)> >]'
/usr/include/c++/7/bits/stl_algo.h:5008:29:   required from 'void std::__stable_sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*, std::vector<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> > > >; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<KDTree<std::tuple<_Elements ...>, ValueType>::KDTree(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >) [with ValueType = std::__cxx11::basic_string<char>; KeyTypes = {int, int, int}]::<lambda(auto:1&, auto:2&)> >]'
/usr/include/c++/7/bits/stl_algo.h:5077:36:   required from 'void std::stable_sort(_RAIter, _RAIter, _Compare) [with _RAIter = __gnu_cxx::__normal_iterator<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*, std::vector<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> > > >; _Compare = KDTree<std::tuple<_Elements ...>, ValueType>::KDTree(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >) [with ValueType = std::__cxx11::basic_string<char>; KeyTypes = {int, int, int}]::<lambda(auto:1&, auto:2&)>]'
/in/kdtree.hpp:396:25:   required from 'KDTree<std::tuple<_Elements ...>, ValueType>::KDTree(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >) [with ValueType = std::__cxx11::basic_string<char>; KeyTypes = {int, int, int}]'
/in/driver/main.cpp:43:57:   required from here
/usr/include/c++/7/bits/predefined_ops.h:143:18: error: void value not ignored as it ought to be
/usr/include/c++/7/bits/predefined_ops.h: In instantiation of 'bool __gnu_cxx::__ops::_Val_comp_iter<_Compare>::operator()(_Value&, _Iterator) [with _Value = std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >; _Iterator = __gnu_cxx::__normal_iterator<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*, std::vector<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> > > >; _Compare = KDTree<std::tuple<_Elements ...>, ValueType>::KDTree(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >) [with ValueType = std::__cxx11::basic_string<char>; KeyTypes = {int, int, int}]::<lambda(auto:1&, auto:2&)>]':
/usr/include/c++/7/bits/stl_algo.h:1828:20:   required from 'void std::__unguarded_linear_insert(_RandomAccessIterator, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*, std::vector<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> > > >; _Compare = __gnu_cxx::__ops::_Val_comp_iter<KDTree<std::tuple<_Elements ...>, ValueType>::KDTree(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >) [with ValueType = std::__cxx11::basic_string<char>; KeyTypes = {int, int, int}]::<lambda(auto:1&, auto:2&)> >]'
/usr/include/c++/7/bits/stl_algo.h:1855:36:   required from 'void std::__insertion_sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*, std::vector<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> > > >; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<KDTree<std::tuple<_Elements ...>, ValueType>::KDTree(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >) [with ValueType = std::__cxx11::basic_string<char>; KeyTypes = {int, int, int}]::<lambda(auto:1&, auto:2&)> >]'
/usr/include/c++/7/bits/stl_algo.h:2766:25:   required from 'void std::__inplace_stable_sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*, std::vector<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> > > >; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<KDTree<std::tuple<_Elements ...>, ValueType>::KDTree(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >) [with ValueType = std::__cxx11::basic_string<char>; KeyTypes = {int, int, int}]::<lambda(auto:1&, auto:2&)> >]'
/usr/include/c++/7/bits/stl_algo.h:5006:28:   required from 'void std::__stable_sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*, std::vector<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> > > >; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<KDTree<std::tuple<_Elements ...>, ValueType>::KDTree(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >) [with ValueType = std::__cxx11::basic_string<char>; KeyTypes = {int, int, int}]::<lambda(auto:1&, auto:2&)> >]'
/usr/include/c++/7/bits/stl_algo.h:5077:36:   required from 'void std::stable_sort(_RAIter, _RAIter, _Compare) [with _RAIter = __gnu_cxx::__normal_iterator<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*, std::vector<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> > > >; _Compare = KDTree<std::tuple<_Elements ...>, ValueType>::KDTree(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >) [with ValueType = std::__cxx11::basic_string<char>; KeyTypes = {int, int, int}]::<lambda(auto:1&, auto:2&)>]'
/in/kdtree.hpp:396:25:   required from 'KDTree<std::tuple<_Elements ...>, ValueType>::KDTree(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >) [with ValueType = std::__cxx11::basic_string<char>; KeyTypes = {int, int, int}]'
/in/driver/main.cpp:43:57:   required from here
/usr/include/c++/7/bits/predefined_ops.h:215:11: error: void value not ignored as it ought to be
  { return bool(_M_comp(__val, *__it)); }
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/predefined_ops.h: In instantiation of 'constexpr bool __gnu_cxx::__ops::_Iter_comp_iter<_Compare>::operator()(_Iterator1, _Iterator2) [with _Iterator1 = std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*; _Iterator2 = std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*; _Compare = KDTree<std::tuple<_Elements ...>, ValueType>::KDTree(std::vector<std::pair<std::tuple<_Elements ...>, ValueType> >) [with ValueType = std::__cxx11::basic_string<char>; KeyTypes = {int, int, int}]::<lambda(auto:1&, auto:2&)>]':
/usr/include/c++/7/bits/stl_algo.h:2645:14:   required from '_OutputIterator std::__move_merge(_InputIterator, _InputIterator, _InputIterator, _InputIterator, _OutputIterator, _Compare) [with _InputIterator = std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*; _OutputIterator = __gnu_cxx::__normal_iterator<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> >*, std::vector<std::pair<std::tuple<int, int, int>, std::__cxx11::basic_string<char> > > >; _Compare = __gnu_cxx::__ops::_I