View Compilation Error

0_0_38682756_10925.cpp: In function 'void solve()':
0_0_38682756_10925.cpp:93:45: error: reference to 'relation' is ambiguous
   93 |                                         if (relation(b[k], l) != 1) e[i][j] = inf;
      |                                             ^~~~~~~~
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_38682756_10925.cpp:64:5: note:                 'long long int relation(Point, Line)'
   64 | int relation(Point P, Line l) {
      |     ^~~~~~~~