0_0_20971798_28797.cpp: In function 'void insert(int, int)':
0_0_20971798_28797.cpp:16:25: error: reference to 'next' is ambiguous
void insert(ll x,ll y){ next[++tot]=head[x]; head[x]=tot; vet[tot]=y;}
^
0_0_20971798_28797.cpp:15:15: note: candidates are: int next [400010]
ll head[maxn],next[maxn],vet[maxn],fa[maxn][21],tot,bin[100],n,Q,dep[maxn],a[maxn],b[maxn],cnt,vis[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_20971798_28797.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_20971798_28797.cpp: In function 'void dfs(int)':
0_0_20971798_28797.cpp:19:23: error: reference to 'next' is ambiguous
for(ll i=head[x];i;i=next[i])
^
0_0_20971798_28797.cpp:15:15: note: candidates are: int next [400010]
ll head[maxn],next[maxn],vet[maxn],fa[maxn][21],tot,bin[100],n,Q,dep[maxn],a[maxn],b[maxn],cnt,vis[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_20971798_28797.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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