0_0_18381370_31522.cpp: In function 'void init()':
0_0_18381370_31522.cpp:89:15: error: reference to 'next' is ambiguous
to[i]=next[i]=head[i]=0;
^
0_0_18381370_31522.cpp:78:25: note: candidates are: int next [210]
int to[maxn],head[maxn],next[maxn];
^
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_18381370_31522.cpp:68:
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_18381370_31522.cpp: In function 'void add(int, int)':
0_0_18381370_31522.cpp:96:5: error: reference to 'next' is ambiguous
next[tol]=head[a];
^
0_0_18381370_31522.cpp:78:25: note: candidates are: int next [210]
int to[maxn],head[maxn],next[maxn];
^
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_18381370_31522.cpp:68:
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_18381370_31522.cpp: In function 'int dfs(int)':
0_0_18381370_31522.cpp:103:30: error: reference to 'next' is ambiguous
for (int i=head[u]; i; i=next[i]){
^
0_0_18381370_31522.cpp:78:25: note: candidates are: int next [210]
int to[maxn],head[maxn],next[maxn];
^
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_18381370_31522.cpp:68:
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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