/in/foo.cc: In function 'int main()':
/in/foo.cc:29:13: error: no matching function for call to 'sort(s*, s*, <unresolved overloaded function type>)'
   29 |         sort(a+1,a+n+1,cmp);
      |         ~~~~^~~~~~~~~~~~~~~
In file included from /usr/include/c++/12/algorithm:61,
                 from /usr/include/x86_64-linux-gnu/c++/12/bits/stdc++.h:65,
                 from /in/foo.cc:1:
/usr/include/c++/12/bits/stl_algo.h:4810:5: note: candidate: 'template<class _RAIter> void std::sort(_RAIter, _RAIter)'
 4810 |     sort(_RandomAccessIterator __first, _RandomAccessIterator __last)
      |     ^~~~
/usr/include/c++/12/bits/stl_algo.h:4810:5: note:   template argument deduction/substitution failed:
/in/foo.cc:29:13: note:   candidate expects 2 arguments, 3 provided
   29 |         sort(a+1,a+n+1,cmp);
      |         ~~~~^~~~~~~~~~~~~~~
/usr/include/c++/12/bits/stl_algo.h:4841:5: note: candidate: 'template<class _RAIter, class _Compare> void std::sort(_RAIter, _RAIter, _Compare)'
 4841 |     sort(_RandomAccessIterator __first, _RandomAccessIterator __last,
      |     ^~~~
/usr/include/c++/12/bits/stl_algo.h:4841:5: note:   template argument deduction/substitution failed:
/in/foo.cc:29:13: note:   couldn't deduce template parameter '_Compare'
   29 |         sort(a+1,a+n+1,cmp);
      |         ~~~~^~~~~~~~~~~~~~~
/in/foo.cc:30:13: error: no matching function for call to 'sort(int*, int*, <unresolved overloaded function type>)'
   30 |         sort(b+1,b+n+1,cmp);
      |         ~~~~^~~~~~~~~~~~~~~
/usr/include/c++/12/bits/stl_algo.h:4810:5: note: candidate: 'template<class _RAIter> void std::sort(_RAIter, _RAIter)'
 4810 |     sort(_RandomAccessIterator __first, _RandomAccessIterator __last)
      |     ^~~~
/usr/include/c++/12/bits/stl_algo.h:4810:5: note:   template argument deduction/substitution failed:
/in/foo.cc:30:13: note:   candidate expects 2 arguments, 3 provided
   30 |         sort(b+1,b+n+1,cmp);
      |         ~~~~^~~~~~~~~~~~~~~
/usr/include/c++/12/bits/stl_algo.h:4841:5: note: candidate: 'template<class _RAIter, class _Compare> void std::sort(_RAIter, _RAIter, _Compare)'
 4841 |     sort(_RandomAccessIterator __first, _RandomAccessIterator __last,
      |     ^~~~
/usr/include/c++/12/bits/stl_algo.h:4841:5: note:   template argument deduction/substitution failed:
/in/foo.cc:30:13: note:   couldn't deduce template parameter '_Compare'
   30 |         sort(b+1,b+n+1,cmp);
      |         ~~~~^~~~~~~~~~~~~~~