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View Compilation Error

0_0_25201567_25988.cpp: In function 'void insert(int, int, int, int)':
0_0_25201567_25988.cpp:26:2: error: reference to 'next' is ambiguous
  next[++m1]=first[u];
  ^
0_0_25201567_25988.cpp:23:8: note: candidates are: int next [201000]
 int m1,next[201000],first[201000],zhi[201000],qu1[201000],qu2[201000];
        ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:66:0,
                 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++/ostream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39,
                 from 0_0_25201567_25988.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator_base_funcs.h:184:5: note:                 template<class _ForwardIterator> _ForwardIterator std::next(_ForwardIterator, typename std::iterator_traits<_Iter>::difference_type)
     next(_ForwardIterator __x, typename
     ^
0_0_25201567_25988.cpp: In function 'int main()':
0_0_25201567_25988.cpp:70:37: error: reference to 'next' is ambiguous
          for (int kk=first[j];kk;kk=next[kk])
                                     ^
0_0_25201567_25988.cpp:23:8: note: candidates are: int next [201000]
 int m1,next[201000],first[201000],zhi[201000],qu1[201000],qu2[201000];
        ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:66:0,
                 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++/ostream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39,
                 from 0_0_25201567_25988.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator_base_funcs.h:184:5: note:                 template<class _ForwardIterator> _ForwardIterator std::next(_ForwardIterator, typename std::iterator_traits<_Iter>::difference_type)
     next(_ForwardIterator __x, typename
     ^


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