0_0_21722719_30280.cpp: In function 'void add(int, int)':
0_0_21722719_30280.cpp:12:2: error: reference to 'next' is ambiguous
next[tot]=head[u];
^
0_0_21722719_30280.cpp:9:31: note: candidates are: int next [410]
int zx1,zx2,mi,n,tot,to[N<<1],next[N<<1],head[N],sum[N],dp[N][N],tmp[N];
^
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_21722719_30280.cpp:2:
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_21722719_30280.cpp: In function 'void dfs(int, int)':
0_0_21722719_30280.cpp:18:25: error: reference to 'next' is ambiguous
for(int i=head[u];~i;i=next[i]){
^
0_0_21722719_30280.cpp:9:31: note: candidates are: int next [410]
int zx1,zx2,mi,n,tot,to[N<<1],next[N<<1],head[N],sum[N],dp[N][N],tmp[N];
^
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_21722719_30280.cpp:2:
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_21722719_30280.cpp: In function 'void calc(int, int)':
0_0_21722719_30280.cpp:32:25: error: reference to 'next' is ambiguous
for(int i=head[u];~i;i=next[i]){
^
0_0_21722719_30280.cpp:9:31: note: candidates are: int next [410]
int zx1,zx2,mi,n,tot,to[N<<1],next[N<<1],head[N],sum[N],dp[N][N],tmp[N];
^
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_21722719_30280.cpp:2:
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_21722719_30280.cpp: In function 'int work(int, int, int)':
0_0_21722719_30280.cpp:49:25: error: reference to 'next' is ambiguous
for(int i=head[u];~i;i=next[i]){
^
0_0_21722719_30280.cpp:9:31: note: candidates are: int next [410]
int zx1,zx2,mi,n,tot,to[N<<1],next[N<<1],head[N],sum[N],dp[N][N],tmp[N];
^
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_21722719_30280.cpp:2:
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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