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View Compilation Error

0_0_13786571_17530.cpp: In function 'void con(int, int)':
0_0_13786571_17530.cpp:21:12: error: reference to 'rank' is ambiguous
         if(rank[fy]>rank[fx]){father[fx]=fy;rank[fy]+=rank[fx];}  
            ^
0_0_13786571_17530.cpp:5:28: note: candidates are: int rank [10000001]
     int n,father[10000001],rank[10000001],ans,sum,v[10000001],st[200001];  
                            ^
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++/bits/stl_algobase.h:64,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/char_traits.h:39,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39,
                 from 0_0_13786571_17530.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_13786571_17530.cpp:21:21: error: reference to 'rank' is ambiguous
         if(rank[fy]>rank[fx]){father[fx]=fy;rank[fy]+=rank[fx];}  
                     ^
0_0_13786571_17530.cpp:5:28: note: candidates are: int rank [10000001]
     int n,father[10000001],rank[10000001],ans,sum,v[10000001],st[200001];  
                            ^
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++/bits/stl_algobase.h:64,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/char_traits.h:39,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39,
                 from 0_0_13786571_17530.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_13786571_17530.cpp:21:45: error: reference to 'rank' is ambiguous
         if(rank[fy]>rank[fx]){father[fx]=fy;rank[fy]+=rank[fx];}  
                                             ^
0_0_13786571_17530.cpp:5:28: note: candidates are: int rank [10000001]
     int n,father[10000001],rank[10000001],ans,sum,v[10000001],st[200001];  
                            ^
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++/bits/stl_algobase.h:64,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/char_traits.h:39,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39,
                 from 0_0_13786571_17530.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_13786571_17530.cpp:21:55: error: reference to 'rank' is ambiguous
         if(rank[fy]>rank[fx]){father[fx]=fy;rank[fy]+=rank[fx];}  
                                                       ^
0_0_13786571_17530.cpp:5:28: note: candidates are: int rank [10000001]
     int n,father[10000001],rank[10000001],ans,sum,v[10000001],st[200001];  
                            ^
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++/bits/stl_algobase.h:64,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/char_traits.h:39,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39,
                 from 0_0_13786571_17530.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_13786571_17530.cpp:22:29: error: reference to 'rank' is ambiguous
         else {father[fy]=fx;rank[fx]+=rank[fy];}  
                             ^
0_0_13786571_17530.cpp:5:28: note: candidates are: int rank [10000001]
     int n,father[10000001],rank[10000001],ans,sum,v[10000001],st[200001];  
                            ^
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++/bits/stl_algobase.h:64,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/char_traits.h:39,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39,
                 from 0_0_13786571_17530.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_13786571_17530.cpp:22:39: error: reference to 'rank' is ambiguous
         else {father[fy]=fx;rank[fx]+=rank[fy];}  
                                       ^
0_0_13786571_17530.cpp:5:28: note: candidates are: int rank [10000001]
     int n,father[10000001],rank[10000001],ans,sum,v[10000001],st[200001];  
                            ^
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++/bits/stl_algobase.h:64,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/char_traits.h:39,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39,
                 from 0_0_13786571_17530.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_13786571_17530.cpp: In function 'int main()':
0_0_13786571_17530.cpp:37:41: error: reference to 'rank' is ambiguous
                  if(!v[a])  father[a]=a,rank[a]=1,st[++sum]=a;  
                                         ^
0_0_13786571_17530.cpp:5:28: note: candidates are: int rank [10000001]
     int n,father[10000001],rank[10000001],ans,sum,v[10000001],st[200001];  
                            ^
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++/bits/stl_algobase.h:64,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/char_traits.h:39,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39,
                 from 0_0_13786571_17530.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_13786571_17530.cpp:38:41: error: reference to 'rank' is ambiguous
                  if(!v[b])  father[b]=b,rank[b]=1,st[++sum]=b;  
                                         ^
0_0_13786571_17530.cpp:5:28: note: candidates are: int rank [10000001]
     int n,father[10000001],rank[10000001],ans,sum,v[10000001],st[200001];  
                            ^
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++/bits/stl_algobase.h:64,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/char_traits.h:39,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39,
                 from 0_0_13786571_17530.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:               


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