0_0_14702191_19447.cpp: In function 'void add(int, int, int)':
0_0_14702191_19447.cpp:18:2: error: reference to 'next' is ambiguous
next[++tot] = head[x]; v[tot] = y; w[tot] = z; head[x] = tot;
^
0_0_14702191_19447.cpp:14:30: note: candidates are: int next [900000]
int n, m, x, y, z, ans, tot, next[900000], head[900000], w[900000], v[900000];
^
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_14702191_19447.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_14702191_19447.cpp:19:2: error: reference to 'next' is ambiguous
next[++tot] = head[y]; v[tot] = x; w[tot] = z; head[y] = tot;
^
0_0_14702191_19447.cpp:14:30: note: candidates are: int next [900000]
int n, m, x, y, z, ans, tot, next[900000], head[900000], w[900000], v[900000];
^
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_14702191_19447.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_14702191_19447.cpp: In function 'void DFS(int, int, int)':
0_0_14702191_19447.cpp:28:36: error: reference to 'next' is ambiguous
for (int i = head[x]; i != 0; i = next[i]) {
^
0_0_14702191_19447.cpp:14:30: note: candidates are: int next [900000]
int n, m, x, y, z, ans, tot, next[900000], head[900000], w[900000], v[900000];
^
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_14702191_19447.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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