0_0_13564218_14277.cpp: In function 'void add_edge(int, int)':
0_0_13564218_14277.cpp:33:5: error: reference to 'next' is ambiguous
next[cnt] = head[u];
^
0_0_13564218_14277.cpp:30:17: note: candidates are: int next [50005]
int pnt[50005], next[50005], head[5005];
^
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_13564218_14277.cpp:5:
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_13564218_14277.cpp: In function 'bool dfs(int)':
0_0_13564218_14277.cpp:38:34: error: reference to 'next' is ambiguous
for(int i = head[u]; ~i; i = next[i]) {
^
0_0_13564218_14277.cpp:30:17: note: candidates are: int next [50005]
int pnt[50005], next[50005], head[5005];
^
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_13564218_14277.cpp:5:
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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