foo.cc: In function 'int turn2(int)':
foo.cc:14:30: error: wrong number of template arguments (0, should be 1)
   14 |         sort(a+1,a+4,greater<>(int));
      |                              ^
In file included from /nix/store/jgdz5wfqc6q6qhy17lsqnfpbkfi1fcar-gcc-12.2.0/include/c++/12.2.0/string:48,
                 from /nix/store/jgdz5wfqc6q6qhy17lsqnfpbkfi1fcar-gcc-12.2.0/include/c++/12.2.0/bits/locale_classes.h:40,
                 from /nix/store/jgdz5wfqc6q6qhy17lsqnfpbkfi1fcar-gcc-12.2.0/include/c++/12.2.0/bits/ios_base.h:41,
                 from /nix/store/jgdz5wfqc6q6qhy17lsqnfpbkfi1fcar-gcc-12.2.0/include/c++/12.2.0/ios:42,
                 from /nix/store/jgdz5wfqc6q6qhy17lsqnfpbkfi1fcar-gcc-12.2.0/include/c++/12.2.0/istream:38,
                 from /nix/store/jgdz5wfqc6q6qhy17lsqnfpbkfi1fcar-gcc-12.2.0/include/c++/12.2.0/sstream:38,
                 from /nix/store/jgdz5wfqc6q6qhy17lsqnfpbkfi1fcar-gcc-12.2.0/include/c++/12.2.0/complex:45,
                 from /nix/store/jgdz5wfqc6q6qhy17lsqnfpbkfi1fcar-gcc-12.2.0/include/c++/12.2.0/ccomplex:39,
                 from stdc++.h:54:
/nix/store/jgdz5wfqc6q6qhy17lsqnfpbkfi1fcar-gcc-12.2.0/include/c++/12.2.0/bits/stl_function.h:393:12: note: provided for 'template<class _Tp> struct std::greater'
  393 |     struct greater : public binary_function<_Tp, _Tp, bool>
      |            ^~~~~~~
foo.cc:14:32: error: expected primary-expression before 'int'
   14 |         sort(a+1,a+4,greater<>(int));
      |                                ^~~

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