0_0_22730178_19423.cpp: In function 'void addedge(int, int)':
0_0_22730178_19423.cpp:16:2: error: reference to 'next' is ambiguous
next[tot]=head[u],head[u]=tot;
^
0_0_22730178_19423.cpp:10:17: note: candidates are: int next [2000002]
int n,m,head[N],next[2*M],adj[2*M],st[2*M],tot,headr[N],nextr[2*M],adjr[2*M],str[2*M];
^
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_22730178_19423.cpp:1:
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_22730178_19423.cpp: In function 'void tarjan(int, int)':
0_0_22730178_19423.cpp:24:22: error: reference to 'next' is ambiguous
for(i=head[now];i;i=next[i])
^
0_0_22730178_19423.cpp:10:17: note: candidates are: int next [2000002]
int n,m,head[N],next[2*M],adj[2*M],st[2*M],tot,headr[N],nextr[2*M],adjr[2*M],str[2*M];
^
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_22730178_19423.cpp:1:
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_22730178_19423.cpp: In function 'void dfs(int, int)':
0_0_22730178_19423.cpp:45:22: error: reference to 'next' is ambiguous
for(i=head[now];i;i=next[i])
^
0_0_22730178_19423.cpp:10:17: note: candidates are: int next [2000002]
int n,m,head[N],next[2*M],adj[2*M],st[2*M],tot,headr[N],nextr[2*M],adjr[2*M],str[2*M];
^
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_22730178_19423.cpp:1:
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_22730178_19423.cpp: In function 'int main()':
0_0_22730178_19423.cpp:83:10: error: reference to 'next' is ambiguous
memset(next,0,sizeof(next));
^
0_0_22730178_19423.cpp:10:17: note: candidates are: int next [2000002]
int n,m,head[N],next[2*M],adj[2*M],st[2*M],tot,headr[N],nextr[2*M],adjr[2*M],str[2*M];
^
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_22730178_19423.cpp:1:
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_22730178_19423.cpp:83:24: error: reference to 'next' is ambiguous
memset(next,0,sizeof(next));
^
0_0_22730178_19423.cpp:10:17: note: candidates are: int next [2000002]
int n,m,head[N],next[2*M],adj[2*M],st[2*M],tot,headr[N],nextr[2*M],adjr[2*M],str[2*M];
^
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_22730178_19423.cpp:1:
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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