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View Compilation Error

0_0_18029154_30265.cpp: In function 'bool spfa(int, int)':
0_0_18029154_30265.cpp:19:17: error: reference to 'next' is ambiguous
   for (int i=ne;next[i];) {
                 ^
0_0_18029154_30265.cpp:9:5: note: candidates are: int next [2000000]
 int next[2000000],cost[2000000],sora[2000000],flow[2000000],po[2000000];
     ^
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_18029154_30265.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_18029154_30265.cpp:20:6: error: reference to 'next' is ambiguous
    i=next[i],na=sora[i];
      ^
0_0_18029154_30265.cpp:9:5: note: candidates are: int next [2000000]
 int next[2000000],cost[2000000],sora[2000000],flow[2000000],po[2000000];
     ^
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_18029154_30265.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_18029154_30265.cpp: In function 'void getans(int)':
0_0_18029154_30265.cpp:55:17: error: reference to 'next' is ambiguous
   for (int i=ne;next[i];) {
                 ^
0_0_18029154_30265.cpp:9:5: note: candidates are: int next [2000000]
 int next[2000000],cost[2000000],sora[2000000],flow[2000000],po[2000000];
     ^
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_18029154_30265.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_18029154_30265.cpp:56:6: error: reference to 'next' is ambiguous
    i=next[i],na=sora[i];
      ^
0_0_18029154_30265.cpp:9:5: note: candidates are: int next [2000000]
 int next[2000000],cost[2000000],sora[2000000],flow[2000000],po[2000000];
     ^
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_18029154_30265.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_18029154_30265.cpp: In function 'void origin()':
0_0_18029154_30265.cpp:72:35: error: reference to 'next' is ambiguous
  for (int i=1;i<=t;i++) tail[i]=i,next[i]=0;
                                   ^
0_0_18029154_30265.cpp:9:5: note: candidates are: int next [2000000]
 int next[2000000],cost[2000000],sora[2000000],flow[2000000],po[2000000];
     ^
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_18029154_30265.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_18029154_30265.cpp: In function 'void link(int, int, int, int)':
0_0_18029154_30265.cpp:76:7: error: reference to 'next' is ambiguous
  ++ss,next[tail[x]]=ss,tail[x]=ss,sora[ss]=y,flow[ss]=z,cost[ss]=c,next[ss]=0;
       ^
0_0_18029154_30265.cpp:9:5: note: candidates are: int next [2000000]
 int next[2000000],cost[2000000],sora[2000000],flow[2000000],po[2000000];
     ^
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_18029154_30265.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_18029154_30265.cpp:76:68: error: reference to 'next' is ambiguous
  ++ss,next[tail[x]]=ss,tail[x]=ss,sora[ss]=y,flow[ss]=z,cost[ss]=c,next[ss]=0;
                                                                    ^
0_0_18029154_30265.cpp:9:5: note: candidates are: int next [2000000]
 int next[2000000],cost[2000000],sora[2000000],flow[2000000],po[2000000];
     ^
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_18029154_30265.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_18029154_30265.cpp:77:7: error: reference to 'next' is ambiguous
  ++ss,next[tail[y]]=ss,tail[y]=ss,sora[ss]=x,flow[ss]=0,cost[ss]=-c,next[ss]=0;
       ^
0_0_18029154_30265.cpp:9:5: note: candidates are: int next [2000000]
 int next[2000000],cost[2000000],sora[2000000],flow[2000000],po[2000000];
     ^
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_18029154_30265.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_18029154_30265.cpp:77:69: error: reference to 'next' is ambiguous
  ++ss,next[tail[y]]=ss,tail[y]=ss,sora[ss]=x,flow[ss]=0,cost[ss]=-c,next[ss]=0;
                                                                     ^
0_0_18029154_30265.cpp:9:5: note: candidates are: int next [2000000]
 int next[2000000],cost[2000000],sora[2000000],flow[2000000],po[2000000];
     ^
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_18029154_30265.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_18029154_30265.cpp: In function 'int main()':
0_0_18029154_30265.cpp:110:19: error: reference to 'next' is ambiguous
   for (int j=i,ne;next[j];) {
                   ^
0_0_18029154_30265.cpp:9:5: note: candidates are: int next [2000000]
 int next[2000000],cost[2000000],sora[2000000],flow[2000000],po[2000000];
     ^
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_18029154_30265.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_18029154_30265.cpp:111:6: error: reference to 'next' is ambiguous
    j=next[j],ne=sora[j];
      ^
0_0_18029154_30265.cpp:9:5: note: candidates are: int next [2000000]
 int next[2000000],cost[2000000],sora[2000000],flow[2000000],po[2000000];
     ^
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_18029154_30265.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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