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View Compilation Error

0_0_17137908_6979.cpp: In function 'void insert()':
0_0_17137908_6979.cpp:13:8: error: reference to 'next' is ambiguous
    if(!next[now][ch[i]-'a']) next[now][ch[i]-'a']=++tot;
        ^
0_0_17137908_6979.cpp:8:17: note: candidates are: int next [1002333][30]
 int rt=1,cnt[N],next[N][30],fail[N],T,n,tot;
                 ^
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_17137908_6979.cpp:3:
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_17137908_6979.cpp:13:30: error: reference to 'next' is ambiguous
    if(!next[now][ch[i]-'a']) next[now][ch[i]-'a']=++tot;
                              ^
0_0_17137908_6979.cpp:8:17: note: candidates are: int next [1002333][30]
 int rt=1,cnt[N],next[N][30],fail[N],T,n,tot;
                 ^
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_17137908_6979.cpp:3:
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_17137908_6979.cpp:14:7: error: reference to 'next' is ambiguous
   now=next[now][ch[i]-'a']; //warning
       ^
0_0_17137908_6979.cpp:8:17: note: candidates are: int next [1002333][30]
 int rt=1,cnt[N],next[N][30],fail[N],T,n,tot;
                 ^
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_17137908_6979.cpp:3:
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_17137908_6979.cpp: In function 'void bfs()':
0_0_17137908_6979.cpp:20:18: error: reference to 'next' is ambiguous
   rep(i,0,25) if(next[rt][i]) fail[next[rt][i]]=rt,q.push(next[rt][i]); else next[rt][i]=rt;
                  ^
0_0_17137908_6979.cpp:8:17: note: candidates are: int next [1002333][30]
 int rt=1,cnt[N],next[N][30],fail[N],T,n,tot;
                 ^
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_17137908_6979.cpp:3:
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_17137908_6979.cpp:20:36: error: reference to 'next' is ambiguous
   rep(i,0,25) if(next[rt][i]) fail[next[rt][i]]=rt,q.push(next[rt][i]); else next[rt][i]=rt;
                                    ^
0_0_17137908_6979.cpp:8:17: note: candidates are: int next [1002333][30]
 int rt=1,cnt[N],next[N][30],fail[N],T,n,tot;
                 ^
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_17137908_6979.cpp:3:
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_17137908_6979.cpp:20:59: error: reference to 'next' is ambiguous
   rep(i,0,25) if(next[rt][i]) fail[next[rt][i]]=rt,q.push(next[rt][i]); else next[rt][i]=rt;
                                                           ^
0_0_17137908_6979.cpp:8:17: note: candidates are: int next [1002333][30]
 int rt=1,cnt[N],next[N][30],fail[N],T,n,tot;
                 ^
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_17137908_6979.cpp:3:
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_17137908_6979.cpp:20:78: error: reference to 'next' is ambiguous
   rep(i,0,25) if(next[rt][i]) fail[next[rt][i]]=rt,q.push(next[rt][i]); else next[rt][i]=rt;
                                                                              ^
0_0_17137908_6979.cpp:8:17: note: candidates are: int next [1002333][30]
 int rt=1,cnt[N],next[N][30],fail[N],T,n,tot;
                 ^
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_17137908_6979.cpp:3:
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_17137908_6979.cpp:23:21: error: reference to 'next' is ambiguous
     rep(l,0,25) if(!next[x][l])  next[x][l]=next[fail[x]][l]; else {
                     ^
0_0_17137908_6979.cpp:8:17: note: candidates are: int next [1002333][30]
 int rt=1,cnt[N],next[N][30],fail[N],T,n,tot;
                 ^
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_17137908_6979.cpp:3:
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_17137908_6979.cpp:23:34: error: reference to 'next' is ambiguous
     rep(l,0,25) if(!next[x][l])  next[x][l]=next[fail[x]][l]; else {
                                  ^
0_0_17137908_6979.cpp:8:17: note: candidates are: int next [1002333][30]
 int rt=1,cnt[N],next[N][30],fail[N],T,n,tot;
                 ^
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/includ


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