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View Compilation Error

0_0_20658080_20340.cpp: In function 'int main()':
0_0_20658080_20340.cpp:85:13: error: reference to 'hash' is ambiguous
             hash[id++] = a[i];
             ^
0_0_20658080_20340.cpp:13:32: note: candidates are: int hash [200020]
 int a[maxn], b[maxn], c[maxn], hash[maxn << 1];
                                ^
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_20658080_20340.cpp:2:
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_20658080_20340.cpp:86:13: error: reference to 'hash' is ambiguous
             hash[id++] = b[i];
             ^
0_0_20658080_20340.cpp:13:32: note: candidates are: int hash [200020]
 int a[maxn], b[maxn], c[maxn], hash[maxn << 1];
                                ^
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_20658080_20340.cpp:2:
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_20658080_20340.cpp:90:14: error: reference to 'hash' is ambiguous
         sort(hash, hash + id);
              ^
0_0_20658080_20340.cpp:13:32: note: candidates are: int hash [200020]
 int a[maxn], b[maxn], c[maxn], hash[maxn << 1];
                                ^
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_20658080_20340.cpp:2:
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_20658080_20340.cpp:90:20: error: reference to 'hash' is ambiguous
         sort(hash, hash + id);
                    ^
0_0_20658080_20340.cpp:13:32: note: candidates are: int hash [200020]
 int a[maxn], b[maxn], c[maxn], hash[maxn << 1];
                                ^
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_20658080_20340.cpp:2:
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_20658080_20340.cpp:91:21: error: reference to 'hash' is ambiguous
         id = unique(hash, hash + id) - hash;
                     ^
0_0_20658080_20340.cpp:13:32: note: candidates are: int hash [200020]
 int a[maxn], b[maxn], c[maxn], hash[maxn << 1];
                                ^
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_20658080_20340.cpp:2:
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_20658080_20340.cpp:91:27: error: reference to 'hash' is ambiguous
         id = unique(hash, hash + id) - hash;
                           ^
0_0_20658080_20340.cpp:13:32: note: candidates are: int hash [200020]
 int a[maxn], b[maxn], c[maxn], hash[maxn << 1];
                                ^
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_20658080_20340.cpp:2:
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_20658080_20340.cpp:91:40: error: reference to 'hash' is ambiguous
         id = unique(hash, hash + id) - hash;
                                        ^
0_0_20658080_20340.cpp:13:32: note: candidates are: int hash [200020]
 int a[maxn], b[maxn], c[maxn], hash[maxn << 1];
                                ^
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_20658080_20340.cpp:2:
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_20658080_20340.cpp:94:32: error: reference to 'hash' is ambiguous
             a[i] = lower_bound(hash, hash + id, a[i]) - hash + 1;
                                ^
0_0_20658080_20340.cpp:13:32: note: candidates are: int hash [200020]
 int a[maxn], b[maxn], c[maxn], hash[maxn << 1];
                                ^
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_20658080_20340.cpp:2:
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_20658080_20340.cpp:94:38: error: reference to 'hash' is ambiguous
             a[i] = lower_bound(hash, hash + id, a[i]) - hash + 1;
                                      ^
0_0_20658080_20340.cpp:13:32: note: candidates are: int hash [200020]
 int a[maxn], b[maxn], c[maxn], hash[maxn << 1];
                                ^
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_20658080_20340.cpp:2:
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_20658080_20340.cpp:94:57: error: reference to 'hash' is ambiguous
             a[i] = lower_bound(hash, hash + id, a[i]) - hash + 1;
                                                         ^
0_0_20658080_20340.cpp:13:32: note: candidates are: int hash [200020]
 int a[maxn], b[maxn], c[maxn], hash[maxn << 1];
                                ^
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++/al


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