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View Compilation Error

0_0_32289714_8753.cpp: In function 'void init(int)':
0_0_32289714_8753.cpp:22:37: error: reference to 'rank' is ambiguous
     for (int i=0; i<x; ++i) p[i]=i, rank[i]=1;
                                     ^
0_0_32289714_8753.cpp:13:11: note: candidates are: int rank [50123]
 int p[N], rank[N];
           ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/move.h:57:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:59,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:70,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:60,
                 from 0_0_32289714_8753.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_32289714_8753.cpp: In function 'int kruskal(int, int)':
0_0_32289714_8753.cpp:40:20: error: reference to 'rank' is ambiguous
                 if(rank[fa]<rank[fb])
                    ^
0_0_32289714_8753.cpp:13:11: note: candidates are: int rank [50123]
 int p[N], rank[N];
           ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/move.h:57:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:59,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:70,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:60,
                 from 0_0_32289714_8753.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_32289714_8753.cpp:40:29: error: reference to 'rank' is ambiguous
                 if(rank[fa]<rank[fb])
                             ^
0_0_32289714_8753.cpp:13:11: note: candidates are: int rank [50123]
 int p[N], rank[N];
           ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/move.h:57:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:59,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:70,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:60,
                 from 0_0_32289714_8753.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_32289714_8753.cpp:43:21: error: reference to 'rank' is ambiguous
                     rank[fb]+=rank[fa];
                     ^
0_0_32289714_8753.cpp:13:11: note: candidates are: int rank [50123]
 int p[N], rank[N];
           ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/move.h:57:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:59,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:70,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:60,
                 from 0_0_32289714_8753.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_32289714_8753.cpp:43:31: error: reference to 'rank' is ambiguous
                     rank[fb]+=rank[fa];
                               ^
0_0_32289714_8753.cpp:13:11: note: candidates are: int rank [50123]
 int p[N], rank[N];
           ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/move.h:57:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:59,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:70,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:60,
                 from 0_0_32289714_8753.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_32289714_8753.cpp:46:31: error: reference to 'rank' is ambiguous
                     p[fb]=fa, rank[fa]+=rank[fb];
                               ^
0_0_32289714_8753.cpp:13:11: note: candidates are: int rank [50123]
 int p[N], rank[N];
           ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/move.h:57:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:59,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:70,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:60,
                 from 0_0_32289714_8753.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_32289714_8753.cpp:46:41: error: reference to 'rank' is ambiguous
                     p[fb]=fa, rank[fa]+=rank[fb];
                                         ^
0_0_32289714_8753.cpp:13:11: note: candidates are: int rank [50123]
 int p[N], rank[N];
           ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/move.h:57:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:59,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:70,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:60,
                 from 0_0_32289714_8753.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_32289714_8753.cpp:57:20: error: reference to 'rank' is ambiguous
                 if(rank[fa]<rank[fb])
                    ^
0_0_32289714_8753.cpp:13:11: note: candidates are: int rank [50123]
 int p[N], rank[N];
           ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/move.h:57:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:59,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:70,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:60,
                 from 0_0_32289714_8753.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_32289714_8753.cpp:57:29: error: reference to 'rank' is ambiguous
                 if(rank[fa]<rank[fb])
                             ^
0_0_32289714_8753.cpp:13:11: note: candidates are: int rank [50123]
 int p[N], rank[N];
           ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/move.h:57:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:59,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:70,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:60,
                 from 0_0_32289714_8753.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_32289714_8753.cpp:60:21: error: reference to 'rank' is ambiguous
                     rank[fb]+=rank[fa];
                     ^
0_0_32289714_8753.cpp:13:11: note: candidates are: int rank [50123]
 int p[N], rank[N];
           ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/move.h:57:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:59,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:70,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:60,
                 from 0_0_32289714_8753.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_32289714_8753.cpp:60:31: error: reference to 'rank' is ambiguous
                     rank[fb]+=rank[fa];
                               ^
0_0_32289714_8753.cpp:13:11: note: candidates are: int rank [50123]
 int p[N], rank[N];
           ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/move.h:57:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:59,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:70,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:60,
                 from 0_0_32289714_8753.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_32289714_8753.cpp:63:31: error: reference to 'rank' is ambiguous
                     p[fb]=fa, rank[fa]+=rank[fb];
                               ^
0_0_32289714_8753.cpp:13:11: note: candidates are: int rank [50123]
 int p[N], rank[N];
           ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/move.h:57:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:59,
                 from GCC4


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