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View Compilation Error

0_0_36919809_10642.cpp: In function 'int main()':
0_0_36919809_10642.cpp:115:31: error: expected primary-expression before '=' token
                     while(L < =R)//找最大的比pre[i][l].a小的
                               ^
0_0_36919809_10642.cpp:118:50: error: no match for 'operator<=' (operand types are '__gnu_cxx::__alloc_traits<std::allocator<node> >::value_type {aka node}' and '__gnu_cxx::__alloc_traits<std::allocator<node> >::value_type {aka node}')
                         if(to[pre[i][l].to][mid] <= pre[i][l]) L = mid;
                                                  ^
0_0_36919809_10642.cpp:118:50: note: candidates are:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:64:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/char_traits.h:39,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/istream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/sstream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/complex:45,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ccomplex:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
                 from 0_0_36919809_10642.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:239:5: note: template<class _T1, class _T2> constexpr bool std::operator<=(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&)
     operator<=(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:239:5: note:   template argument deduction/substitution failed:
0_0_36919809_10642.cpp:118:61: note:   '__gnu_cxx::__alloc_traits<std::allocator<node> >::value_type {aka node}' is not derived from 'const std::pair<_T1, _T2>'
                         if(to[pre[i][l].to][mid] <= pre[i][l]) L = mid;
                                                             ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:67:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/char_traits.h:39,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/istream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/sstream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/complex:45,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ccomplex:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
                 from 0_0_36919809_10642.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:316:5: note: template<class _Iterator> bool std::operator<=(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&)
     operator<=(const reverse_iterator<_Iterator>& __x,
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:316:5: note:   template argument deduction/substitution failed:
0_0_36919809_10642.cpp:118:61: note:   '__gnu_cxx::__alloc_traits<std::allocator<node> >::value_type {aka node}' is not derived from 'const std::reverse_iterator<_Iterator>'
                         if(to[pre[i][l].to][mid] <= pre[i][l]) L = mid;
                                                             ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:67:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/char_traits.h:39,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/istream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/sstream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/complex:45,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ccomplex:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
                 from 0_0_36919809_10642.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:366:5: note: template<class _IteratorL, class _IteratorR> bool std::operator<=(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_IteratorR>&)
     operator<=(const reverse_iterator<_IteratorL>& __x,
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:366:5: note:   template argument deduction/substitution failed:
0_0_36919809_10642.cpp:118:61: note:   '__gnu_cxx::__alloc_traits<std::allocator<node> >::value_type {aka node}' is not derived from 'const std::reverse_iterator<_Iterator>'
                         if(to[pre[i][l].to][mid] <= pre[i][l]) L = mid;
                                                             ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:67:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/char_traits.h:39,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/istream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/sstream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/complex:45,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ccomplex:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
                 from 0_0_36919809_10642.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:1084:5: note: template<class _IteratorL, class _IteratorR> bool std::operator<=(const std::move_iterator<_Iterator>&, const std::move_iterator<_IteratorR>&)
     operator<=(const move_iterator<_IteratorL>& __x,
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:1084:5: note:   template argument deduction/substitution failed:
0_0_36919809_10642.cpp:118:61: note:   '__gnu_cxx::__alloc_traits<std::allocator<node> >::value_type {aka node}' is not derived from 'const std::move_iterator<_Iterator>'
                         if(to[pre[i][l].to][mid] <= pre[i][l]) L = mid;
                                                             ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:67:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/char_traits.h:39,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/istream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/sstream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/complex:45,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ccomplex:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
                 from 0_0_36919809_10642.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:1090:5: note: template<class _Iterator> bool std::operator<=(const std::move_iterator<_Iterator>&, const std::move_iterator<_Iterator>&)
     operator<=(const move_iterator<_Iterator>& __x,
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:1090:5: note:   template argument deduction/substitution failed:
0_0_36919809_10642.cpp:118:61: note:   '__gnu_cxx::__alloc_traits<std::allocator<node> >::value_type {aka node}' is not derived from 'const std::move_iterator<_Iterator>'
                         if(to[pre[i][l].to][mid] <= pre[i][l]) L = mid;
                                                             ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/locale_classes.h:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/ios_base.h:41,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:42,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/istream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/sstream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/complex:45,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ccomplex:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
                 from 0_0_36919809_10642.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:2662:5: note: template<class _CharT, class _Traits, class _Alloc> bool std::operator<=(const std::basic_string<_CharT, _Traits, _Alloc>&, const std::basic_string<_CharT, _Traits, _Alloc>&)
     operator<=(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:2662:5: note:   template argument deduction/substitution failed:
0_0_36919809_10642.cpp:118:61: note:   '__gnu_cxx::__alloc_traits<std::allocator<node> >::value_type {aka node}' is not derived from 'const std::basic_string<_CharT, _Traits, _Alloc>'
    


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