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View Compilation Error

0_0_21377363_12554.cpp:11:23: error: 'int cos [1010]' redeclared as different kind of symbol
 int pro[maxn],cos[maxn];
                       ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/cmath:44:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:66,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62,
                 from 0_0_21377363_12554.cpp:4:
GCC4.9.2/x86_64-w64-mingw32/include/math.h:139:18: note: previous declaration 'double cos(double)'
   double __cdecl cos(double _X);
                  ^
0_0_21377363_12554.cpp: In function 'void diguang(int)':
0_0_21377363_12554.cpp:27:33: error: reference to 'next' is ambiguous
         for (int e=head[x];~e;e=next[e])
                                 ^
0_0_21377363_12554.cpp:13:46: note: candidates are: int next [3000000]
 int u[max_2],v[max_2],cap[max_2],flow[max_2],next[max_2];
                                              ^
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_21377363_12554.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_21377363_12554.cpp: In function 'int dishen(int, int, int)':
0_0_21377363_12554.cpp:41:32: error: reference to 'next' is ambiguous
     for (int &e=second[s];~e;e=next[e])
                                ^
0_0_21377363_12554.cpp:13:46: note: candidates are: int next [3000000]
 int u[max_2],v[max_2],cap[max_2],flow[max_2],next[max_2];
                                              ^
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_21377363_12554.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_21377363_12554.cpp: In function 'void add(int, int, int)':
0_0_21377363_12554.cpp:88:5: error: reference to 'next' is ambiguous
     next[tmp]=head[u[tmp]];
     ^
0_0_21377363_12554.cpp:13:46: note: candidates are: int next [3000000]
 int u[max_2],v[max_2],cap[max_2],flow[max_2],next[max_2];
                                              ^
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_21377363_12554.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_21377363_12554.cpp:94:5: error: reference to 'next' is ambiguous
     next[tmp]=head[u[tmp]];
     ^
0_0_21377363_12554.cpp:13:46: note: candidates are: int next [3000000]
 int u[max_2],v[max_2],cap[max_2],flow[max_2],next[max_2];
                                              ^
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_21377363_12554.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_21377363_12554.cpp: In function 'int main()':
0_0_21377363_12554.cpp:117:30: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
             scanf("%d",&cos[i]);
                              ^
0_0_21377363_12554.cpp:118:29: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
             add(i+n,tt,cos[i]);
                             ^


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