0_0_23515203_6538.cpp: In function 'void Add_Edge(int, int, int)':
0_0_23515203_6538.cpp:57:5: error: reference to 'next' is ambiguous
next[tot] = fir[u], fir[u] = tot ++;
^
0_0_23515203_6538.cpp:52:13: note: candidates are: int next [1000010]
int fir[N], next[N << 1], tot, l, r;
^
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_23515203_6538.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_23515203_6538.cpp: In function 'int dfs(int, int, int, bool)':
0_0_23515203_6538.cpp:64:32: error: reference to 'next' is ambiguous
for(int i = fir[u]; ~i; i= next[i])
^
0_0_23515203_6538.cpp:52:13: note: candidates are: int next [1000010]
int fir[N], next[N << 1], tot, l, r;
^
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_23515203_6538.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_23515203_6538.cpp: In function 'int main()':
0_0_23515203_6538.cpp:96:37: error: reference to 'next' is ambiguous
for(int i = fir[0]; ~i; i = next[i])
^
0_0_23515203_6538.cpp:52:13: note: candidates are: int next [1000010]
int fir[N], next[N << 1], tot, l, r;
^
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_23515203_6538.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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