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View Compilation Error

0_0_16033480_25867.cpp: In function 'int find(int)':
0_0_16033480_25867.cpp:16:13: error: reference to 'hash' is ambiguous
          if(hash[mid]<x)l=mid+1;
             ^
0_0_16033480_25867.cpp:6:52: note: candidates are: int hash [100005]
 int s[maxn],ls[maxn],rs[maxn],root[maxm],num[maxm],hash[maxm];
                                                    ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:3068:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:66,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62,
                 from 0_0_16033480_25867.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/functional_hash.h:58:12: note:                 template<class _Tp> struct std::hash
     struct hash;
            ^
0_0_16033480_25867.cpp: In function 'int main()':
0_0_16033480_25867.cpp:50:3: error: reference to 'hash' is ambiguous
   hash[++tot]=num[1];
   ^
0_0_16033480_25867.cpp:6:52: note: candidates are: int hash [100005]
 int s[maxn],ls[maxn],rs[maxn],root[maxm],num[maxm],hash[maxm];
                                                    ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:3068:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:66,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62,
                 from 0_0_16033480_25867.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/functional_hash.h:58:12: note:                 template<class _Tp> struct std::hash
     struct hash;
            ^
0_0_16033480_25867.cpp:51:44: error: reference to 'hash' is ambiguous
   for(int i=2;i<=n;i++)if(num[i]!=num[i-1])hash[++tot]=num[i];
                                            ^
0_0_16033480_25867.cpp:6:52: note: candidates are: int hash [100005]
 int s[maxn],ls[maxn],rs[maxn],root[maxm],num[maxm],hash[maxm];
                                                    ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:3068:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:66,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62,
                 from 0_0_16033480_25867.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/functional_hash.h:58:12: note:                 template<class _Tp> struct std::hash
     struct hash;
            ^
0_0_16033480_25867.cpp:59:18: error: reference to 'hash' is ambiguous
    printf("%d\n",hash[ask(1,tot,root[l-1],root[r],(r-l)/2+1)]);
                  ^
0_0_16033480_25867.cpp:6:52: note: candidates are: int hash [100005]
 int s[maxn],ls[maxn],rs[maxn],root[maxm],num[maxm],hash[maxm];
                                                    ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:3068:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:66,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62,
                 from 0_0_16033480_25867.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/functional_hash.h:58:12: note:                 template<class _Tp> struct std::hash
     struct hash;
            ^


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