View Compilation Error

0_0_38911105_1300.cpp: In function 'void solve()':
0_0_38911105_1300.cpp:58:21: error: reference to 'relation' is ambiguous
   58 |                 cnt[relation(b[k])]++;
      |                     ^~~~~~~~
In file included from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/compare:37,
                 from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bits/stl_pair.h:65,
                 from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bits/stl_algobase.h:64,
                 from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/algorithm:60,
                 from .\stdc++.h:51:
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/concepts:365:13: note: candidates are: 'template<class _Rel, class _Tp, class _Up> concept std::relation'
  365 |     concept relation
      |             ^~~~~~~~
0_0_38911105_1300.cpp:26:5: note:                 'int relation(Point)'
   26 | int relation(Point p) {
      |     ^~~~~~~~