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View Compilation Error

0_0_19755668_24695.cpp: In function 'int newnode()':
0_0_19755668_24695.cpp:16:29: error: reference to 'next' is ambiguous
     for(int i=0; i<26; i++) next[pos][i] = 0;  
                             ^
0_0_19755668_24695.cpp:12:5: note: candidates are: int next [500006][26]
 int next[N][26],cnt[N],fail[N],pos;  
     ^
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++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_19755668_24695.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_19755668_24695.cpp: In function 'void insert(char*)':
0_0_19755668_24695.cpp:26:34: error: reference to 'next' is ambiguous
         int k = s[i] - 'a', &x = next[p][k];  
                                  ^
0_0_19755668_24695.cpp:12:5: note: candidates are: int next [500006][26]
 int next[N][26],cnt[N],fail[N],pos;  
     ^
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++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_19755668_24695.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_19755668_24695.cpp: In function 'void makenext()':
0_0_19755668_24695.cpp:45:21: error: reference to 'next' is ambiguous
             int v = next[u][i];  
                     ^
0_0_19755668_24695.cpp:12:5: note: candidates are: int next [500006][26]
 int next[N][26],cnt[N],fail[N],pos;  
     ^
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++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_19755668_24695.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_19755668_24695.cpp:47:15: error: reference to 'next' is ambiguous
               next[u][i] = next[fail[u]][i]; // why? 缺少v, 求next  
               ^
0_0_19755668_24695.cpp:12:5: note: candidates are: int next [500006][26]
 int next[N][26],cnt[N],fail[N],pos;  
     ^
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++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_19755668_24695.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_19755668_24695.cpp:47:28: error: reference to 'next' is ambiguous
               next[u][i] = next[fail[u]][i]; // why? 缺少v, 求next  
                            ^
0_0_19755668_24695.cpp:12:5: note: candidates are: int next [500006][26]
 int next[N][26],cnt[N],fail[N],pos;  
     ^
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++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_19755668_24695.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_19755668_24695.cpp:53:25: error: reference to 'next' is ambiguous
                 fail[v]=next[fail[u]][i]; // 为什么只弄了一下? 如果没有会怎么样? 求fail  
                         ^
0_0_19755668_24695.cpp:12:5: note: candidates are: int next [500006][26]
 int next[N][26],cnt[N],fail[N],pos;  
     ^
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++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_19755668_24695.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_19755668_24695.cpp: In function 'int query(char*)':
0_0_19755668_24695.cpp:65:13: error: reference to 'next' is ambiguous
         d = next[d][idx];  
             ^
0_0_19755668_24695.cpp:12:5: note: candidates are: int next [500006][26]
 int next[N][26],cnt[N],fail[N],pos;  
     ^
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++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_19755668_24695.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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