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View Compilation Error

0_0_14694831_9708.cpp: In function 'void clrall()':
0_0_14694831_9708.cpp:17:50: error: reference to 'next' is ambiguous
   clr(t); clr(l); clr(r); clr(x); clr(last); clr(next); clr(dsu);
                                                  ^
0_0_14694831_9708.cpp:8:23: note: in definition of macro 'clr'
 #define clr(x) memset(x, 0, sizeof(x))
                       ^
0_0_14694831_9708.cpp:13:15: note: candidates are: int next [262200]
 int last[sz], next[sz], dsu[sz], final[sz], fintime[sz];
               ^
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++/vector:60,
                 from 0_0_14694831_9708.cpp:4:
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_14694831_9708.cpp:17:50: error: reference to 'next' is ambiguous
   clr(t); clr(l); clr(r); clr(x); clr(last); clr(next); clr(dsu);
                                                  ^
0_0_14694831_9708.cpp:8:36: note: in definition of macro 'clr'
 #define clr(x) memset(x, 0, sizeof(x))
                                    ^
0_0_14694831_9708.cpp:13:15: note: candidates are: int next [262200]
 int last[sz], next[sz], dsu[sz], final[sz], fintime[sz];
               ^
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++/vector:60,
                 from 0_0_14694831_9708.cpp:4:
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_14694831_9708.cpp: In function 'void doit()':
0_0_14694831_9708.cpp:58:37: error: reference to 'next' is ambiguous
   for (i = 2; i <= n + 2; i++) last[next[i - 1] = i] = i - 1;
                                     ^
0_0_14694831_9708.cpp:13:15: note: candidates are: int next [262200]
 int last[sz], next[sz], dsu[sz], final[sz], fintime[sz];
               ^
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++/vector:60,
                 from 0_0_14694831_9708.cpp:4:
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_14694831_9708.cpp:62:29: error: reference to 'next' is ambiguous
       for (; j <= r[i]; j = next[j]){
                             ^
0_0_14694831_9708.cpp:13:15: note: candidates are: int next [262200]
 int last[sz], next[sz], dsu[sz], final[sz], fintime[sz];
               ^
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++/vector:60,
                 from 0_0_14694831_9708.cpp:4:
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_14694831_9708.cpp:63:14: error: reference to 'next' is ambiguous
  dsu[j] = k; next[last[j]] = next[j]; last[next[j]] = last[j];
              ^
0_0_14694831_9708.cpp:13:15: note: candidates are: int next [262200]
 int last[sz], next[sz], dsu[sz], final[sz], fintime[sz];
               ^
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++/vector:60,
                 from 0_0_14694831_9708.cpp:4:
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_14694831_9708.cpp:63:30: error: reference to 'next' is ambiguous
  dsu[j] = k; next[last[j]] = next[j]; last[next[j]] = last[j];
                              ^
0_0_14694831_9708.cpp:13:15: note: candidates are: int next [262200]
 int last[sz], next[sz], dsu[sz], final[sz], fintime[sz];
               ^
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++/vector:60,
                 from 0_0_14694831_9708.cpp:4:
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_14694831_9708.cpp:63:44: error: reference to 'next' is ambiguous
  dsu[j] = k; next[last[j]] = next[j]; last[next[j]] = last[j];
                                            ^
0_0_14694831_9708.cpp:13:15: note: candidates are: int next [262200]
 int last[sz], next[sz], dsu[sz], final[sz], fintime[sz];
               ^
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++/vector:60,
                 from 0_0_14694831_9708.cpp:4:
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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