View Compilation Error

0_0_36677438_30870.cpp: In function 'int main()':
0_0_36677438_30870.cpp:90:9: error: reference to 'set' is ambiguous
    else set(pt[i], d, d1);
         ^
0_0_36677438_30870.cpp:39:6: note: candidates are: void set(point&, double, double)
 void set(point &p, double d, double dis)
      ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/set:61:0,
                 from 0_0_36677438_30870.cpp:16:
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
           ^