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View Compilation Error

0_0_26604580_446.cpp: In function 'void dfs(int)':
0_0_26604580_446.cpp:93:8: error: reference to 'next' is ambiguous
     if(next[u][0]==0 && next[u][1]==0)return;
        ^
0_0_26604580_446.cpp:15:5: note: candidates are: int next [400010][2]
 int next[MAXN][2];
     ^
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++/algorithm:61,
                 from 0_0_26604580_446.cpp:5:
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_26604580_446.cpp:93:25: error: reference to 'next' is ambiguous
     if(next[u][0]==0 && next[u][1]==0)return;
                         ^
0_0_26604580_446.cpp:15:5: note: candidates are: int next [400010][2]
 int next[MAXN][2];
     ^
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++/algorithm:61,
                 from 0_0_26604580_446.cpp:5:
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_26604580_446.cpp:95:9: error: reference to 'next' is ambiguous
     dfs(next[u][0]);
         ^
0_0_26604580_446.cpp:15:5: note: candidates are: int next [400010][2]
 int next[MAXN][2];
     ^
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++/algorithm:61,
                 from 0_0_26604580_446.cpp:5:
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_26604580_446.cpp:98:9: error: reference to 'next' is ambiguous
     dfs(next[u][1]);
         ^
0_0_26604580_446.cpp:15:5: note: candidates are: int next [400010][2]
 int next[MAXN][2];
     ^
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++/algorithm:61,
                 from 0_0_26604580_446.cpp:5:
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_26604580_446.cpp: In function 'int main()':
0_0_26604580_446.cpp:116:13: error: reference to 'next' is ambiguous
             next[i][0] = next[i][1] = 0;
             ^
0_0_26604580_446.cpp:15:5: note: candidates are: int next [400010][2]
 int next[MAXN][2];
     ^
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++/algorithm:61,
                 from 0_0_26604580_446.cpp:5:
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_26604580_446.cpp:116:26: error: reference to 'next' is ambiguous
             next[i][0] = next[i][1] = 0;
                          ^
0_0_26604580_446.cpp:15:5: note: candidates are: int next [400010][2]
 int next[MAXN][2];
     ^
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++/algorithm:61,
                 from 0_0_26604580_446.cpp:5:
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_26604580_446.cpp:131:13: error: reference to 'next' is ambiguous
             next[u][0] = x;
             ^
0_0_26604580_446.cpp:15:5: note: candidates are: int next [400010][2]
 int next[MAXN][2];
     ^
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++/algorithm:61,
                 from 0_0_26604580_446.cpp:5:
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_26604580_446.cpp:132:13: error: reference to 'next' is ambiguous
             next[u][1] = y;
             ^
0_0_26604580_446.cpp:15:5: note: candidates are: int next [400010][2]
 int next[MAXN][2];
     ^
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++/algorithm:61,
                 from 0_0_26604580_446.cpp:5:
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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