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View Compilation Error

0_0_14038397_14801.cpp: In function 'void add(int, int)':
0_0_14038397_14801.cpp:19:16: error: reference to 'next' is ambiguous
  to[++tot] = u;next[tot] = last[v];last[v] = tot;
                ^
0_0_14038397_14801.cpp:7:5: note: candidates are: int next [40]
 int next[M],to[M],last[N],next_[M],to_[M],last_[N],q[N],dist[N],fa[N],size[N];int OUT;
     ^
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_14038397_14801.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_14038397_14801.cpp: In function 'int bfs(int)':
0_0_14038397_14801.cpp:33:32: error: reference to 'next' is ambiguous
   for (int i = last[x]; i; i = next[i])
                                ^
0_0_14038397_14801.cpp:7:5: note: candidates are: int next [40]
 int next[M],to[M],last[N],next_[M],to_[M],last_[N],q[N],dist[N],fa[N],size[N];int OUT;
     ^
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_14038397_14801.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_14038397_14801.cpp:54:33: error: reference to 'next' is ambiguous
   for (int i = last[x]; i ; i = next[i])
                                 ^
0_0_14038397_14801.cpp:7:5: note: candidates are: int next [40]
 int next[M],to[M],last[N],next_[M],to_[M],last_[N],q[N],dist[N],fa[N],size[N];int OUT;
     ^
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_14038397_14801.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_14038397_14801.cpp:77:33: error: reference to 'next' is ambiguous
    for (int j = last[i]; j; j = next[j])
                                 ^
0_0_14038397_14801.cpp:7:5: note: candidates are: int next [40]
 int next[M],to[M],last[N],next_[M],to_[M],last_[N],q[N],dist[N],fa[N],size[N];int OUT;
     ^
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_14038397_14801.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_14038397_14801.cpp:97:33: error: reference to 'next' is ambiguous
    for (int j = last[i]; j; j = next[j])
                                 ^
0_0_14038397_14801.cpp:7:5: note: candidates are: int next [40]
 int next[M],to[M],last[N],next_[M],to_[M],last_[N],q[N],dist[N],fa[N],size[N];int OUT;
     ^
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_14038397_14801.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_14038397_14801.cpp: In function 'void work()':
0_0_14038397_14801.cpp:150:2: error: reference to 'hash' is ambiguous
  hash[++sz].va = f[tmp];
  ^
0_0_14038397_14801.cpp:16:2: note: candidates are: node hash [5000000]
 }hash[5000000];
  ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:3068:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:66,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62,
                 from 0_0_14038397_14801.cpp:4:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/functional_hash.h:58:12: note:                 template<class _Tp> struct std::hash
     struct hash;
            ^
0_0_14038397_14801.cpp:151:2: error: reference to 'hash' is ambiguous
  hash[sz].sz = tp;
  ^
0_0_14038397_14801.cpp:16:2: note: candidates are: node hash [5000000]
 }hash[5000000];
  ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:3068:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:66,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62,
                 from 0_0_14038397_14801.cpp:4:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/functional_hash.h:58:12: note:                 template<class _Tp> struct std::hash
     struct hash;
            ^
0_0_14038397_14801.cpp: In function 'int main()':
0_0_14038397_14801.cpp:176:10: error: reference to 'next' is ambiguous
   memset(next,0,sizeof(next));
          ^
0_0_14038397_14801.cpp:7:5: note: candidates are: int next [40]
 int next[M],to[M],last[N],next_[M],to_[M],last_[N],q[N],dist[N],fa[N],size[N];int OUT;
     ^
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_14038397_14801.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_14038397_14801.cpp:176:24: error: reference to 'next' is ambiguous
   memset(next,0,sizeof(next));
                        ^
0_0_14038397_14801.cpp:7:5: note: candidates are: int next [40]
 int next[M],to[M],last[N],next_[M],to_[M],last_[N],q[N],dist[N],fa[N],size[N];int OUT;
     ^
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_14038397_14801.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_14038397_14801.cpp:185:8: error: reference to 'hash' is ambiguous
   sort(hash + 1,hash + sz + 1,cmp);
        ^
0_0_14038397_14801.cpp:16:2: note: candidates are: node hash [5000000]
 }hash[5000000];
  ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:3068:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:66,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62,
                 from 0_0_14038397_14801.cpp:4:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/functional_hash.h:58:12: note:                 template<class _Tp> struct std::hash
     struct hash;
            ^
0_0_14038397_14801.cpp:185:17: error: reference to 'hash' is ambiguous
   sort(hash + 1,hash + sz + 1,cmp);
                 ^
0_0_14038397_14801.cpp:16:2: note: candidates are: node hash [5000000]
 }hash[5000000];
  ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:3068:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:66,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62,
                 from 0_0_14038397_14801.cpp:4:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/functional_hash.h:58:12: note:                 template<class _Tp> struct std::hash
     struct hash;
            ^
0_0_14038397_14801.cpp:186:16: error: reference to 'hash' is 


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