0_0_25286118_19082.cpp: In function 'void SPFA(int, int)':
0_0_25286118_19082.cpp:19:24: error: reference to 'next' is ambiguous
for(int i=son[u];i;i=next[i]){
^
0_0_25286118_19082.cpp:12:12: note: candidates are: int next [20005]
int son[N],next[M],ed[M],cost[M],cnt;
^
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_25286118_19082.cpp:4:
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_25286118_19082.cpp: In function 'int main()':
0_0_25286118_19082.cpp:36:4: error: reference to 'next' is ambiguous
next[++cnt]=son[x]; son[x]=cnt; ed[cnt]=y; cost[cnt]=c;
^
0_0_25286118_19082.cpp:12:12: note: candidates are: int next [20005]
int son[N],next[M],ed[M],cost[M],cnt;
^
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_25286118_19082.cpp:4:
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_25286118_19082.cpp:37:4: error: reference to 'next' is ambiguous
next[++cnt]=son[y]; son[y]=cnt; ed[cnt]=x; cost[cnt]=c;
^
0_0_25286118_19082.cpp:12:12: note: candidates are: int next [20005]
int son[N],next[M],ed[M],cost[M],cnt;
^
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_25286118_19082.cpp:4:
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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