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View Compilation Error

0_0_25643794_6186.cpp: In function 'void Combine(int, int)':
0_0_25643794_6186.cpp:35:8: error: reference to 'rank' is ambiguous
     if(rank[fa]>rank[fb])
        ^
0_0_25643794_6186.cpp:10:27: note: candidates are: int rank [100007]
 int num[100003],F[100003],rank[100007];
                           ^
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_25643794_6186.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_25643794_6186.cpp:35:17: error: reference to 'rank' is ambiguous
     if(rank[fa]>rank[fb])
                 ^
0_0_25643794_6186.cpp:10:27: note: candidates are: int rank [100007]
 int num[100003],F[100003],rank[100007];
                           ^
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_25643794_6186.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_25643794_6186.cpp:45:6: error: reference to 'rank' is ambiguous
   if(rank[fa]==rank[fb])
      ^
0_0_25643794_6186.cpp:10:27: note: candidates are: int rank [100007]
 int num[100003],F[100003],rank[100007];
                           ^
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_25643794_6186.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_25643794_6186.cpp:45:16: error: reference to 'rank' is ambiguous
   if(rank[fa]==rank[fb])
                ^
0_0_25643794_6186.cpp:10:27: note: candidates are: int rank [100007]
 int num[100003],F[100003],rank[100007];
                           ^
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_25643794_6186.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_25643794_6186.cpp:47:4: error: reference to 'rank' is ambiguous
    rank[fb]++;
    ^
0_0_25643794_6186.cpp:10:27: note: candidates are: int rank [100007]
 int num[100003],F[100003],rank[100007];
                           ^
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_25643794_6186.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_25643794_6186.cpp: In function 'int main()':
0_0_25643794_6186.cpp:65:4: error: reference to 'rank' is ambiguous
    rank[i]=0;
    ^
0_0_25643794_6186.cpp:10:27: note: candidates are: int rank [100007]
 int num[100003],F[100003],rank[100007];
                           ^
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_25643794_6186.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^


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