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View Compilation Error

0_0_21596104_10808.cpp: In function 'int main()':
0_0_21596104_10808.cpp:86:15: error: reference to 'rank' is ambiguous
         k=0;  rank.clear();
               ^
0_0_21596104_10808.cpp:32:14: note: candidates are: std::map<int, int> rank
 map<int,int >rank;//避免了开数组
              ^
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_21596104_10808.cpp:21:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_21596104_10808.cpp:107:9: error: reference to 'rank' is ambiguous
         rank[b[0]]=1;
         ^
0_0_21596104_10808.cpp:32:14: note: candidates are: std::map<int, int> rank
 map<int,int >rank;//避免了开数组
              ^
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_21596104_10808.cpp:21:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_21596104_10808.cpp:111:17: error: reference to 'rank' is ambiguous
                 rank[b[i]]=++j;
                 ^
0_0_21596104_10808.cpp:32:14: note: candidates are: std::map<int, int> rank
 map<int,int >rank;//避免了开数组
              ^
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_21596104_10808.cpp:21:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_21596104_10808.cpp:119:24: error: reference to 'rank' is ambiguous
                 update(rank[-val[i]],val[i],1);
                        ^
0_0_21596104_10808.cpp:32:14: note: candidates are: std::map<int, int> rank
 map<int,int >rank;//避免了开数组
              ^
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_21596104_10808.cpp:21:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_21596104_10808.cpp:121:24: error: reference to 'rank' is ambiguous
                 update(rank[val[i]],val[i],1);
                        ^
0_0_21596104_10808.cpp:32:14: note: candidates are: std::map<int, int> rank
 map<int,int >rank;//避免了开数组
              ^
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_21596104_10808.cpp:21:
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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