View Compilation Error

0_0_36399302_21430.cpp: In function 'int main()':
0_0_36399302_21430.cpp:16:5: error: reference to 'set' is ambiguous
     set();
     ^
0_0_36399302_21430.cpp:5:6: note: candidates are: void set()
 void set()
      ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/set:61:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:86,
                 from 0_0_36399302_21430.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_set.h:90:11: note:                 template<class _Key, class _Compare, class _Alloc> class std::set
     class set
           ^