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View Compilation Error

0_0_17781572_29695.cpp: In function 'void init(int)':
0_0_17781572_29695.cpp:25:3: error: reference to 'rank' is ambiguous
   rank[i]=0;
   ^
0_0_17781572_29695.cpp:21:5: note: candidates are: int rank [1002]
 int rank[MAX],par[MAX]; 
     ^
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++/vector:60,
                 from 0_0_17781572_29695.cpp:10:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_17781572_29695.cpp: In function 'void unit(int, int)':
0_0_17781572_29695.cpp:45:5: error: reference to 'rank' is ambiguous
  if(rank[x]<rank[y]){
     ^
0_0_17781572_29695.cpp:21:5: note: candidates are: int rank [1002]
 int rank[MAX],par[MAX]; 
     ^
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++/vector:60,
                 from 0_0_17781572_29695.cpp:10:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_17781572_29695.cpp:45:13: error: reference to 'rank' is ambiguous
  if(rank[x]<rank[y]){
             ^
0_0_17781572_29695.cpp:21:5: note: candidates are: int rank [1002]
 int rank[MAX],par[MAX]; 
     ^
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++/vector:60,
                 from 0_0_17781572_29695.cpp:10:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_17781572_29695.cpp:49:6: error: reference to 'rank' is ambiguous
   if(rank[x]==rank[y]) rank[x]++;
      ^
0_0_17781572_29695.cpp:21:5: note: candidates are: int rank [1002]
 int rank[MAX],par[MAX]; 
     ^
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++/vector:60,
                 from 0_0_17781572_29695.cpp:10:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_17781572_29695.cpp:49:15: error: reference to 'rank' is ambiguous
   if(rank[x]==rank[y]) rank[x]++;
               ^
0_0_17781572_29695.cpp:21:5: note: candidates are: int rank [1002]
 int rank[MAX],par[MAX]; 
     ^
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++/vector:60,
                 from 0_0_17781572_29695.cpp:10:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_17781572_29695.cpp:49:24: error: reference to 'rank' is ambiguous
   if(rank[x]==rank[y]) rank[x]++;
                        ^
0_0_17781572_29695.cpp:21:5: note: candidates are: int rank [1002]
 int rank[MAX],par[MAX]; 
     ^
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++/vector:60,
                 from 0_0_17781572_29695.cpp:10:
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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