/in/foo.cc: In function 'int main()':
/in/foo.cc:12:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |                 for(int j=1;j<=s.size();j++)
      |                             ~^~~~~~~~~~
/in/foo.cc:28:24: error: reference to 'max' is ambiguous
   28 |                 if(cnt>max)
      |                        ^~~
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:5756:5: note: candidates are: 'template<class _Tp, class _Compare> _Tp std::max(initializer_list<_Tp>, _Compare)'
 5756 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/12/bits/stl_algo.h:5746:5: note:                 'template<class _Tp> _Tp std::max(initializer_list<_Tp>)'
 5746 |     max(initializer_list<_Tp> __l)
      |     ^~~
In file included from /usr/include/c++/12/string:50,
                 from /usr/include/c++/12/bits/locale_classes.h:40,
                 from /usr/include/c++/12/bits/ios_base.h:41,
                 from /usr/include/c++/12/ios:42,
                 from /usr/include/c++/12/istream:38,
                 from /usr/include/c++/12/sstream:38,
                 from /usr/include/c++/12/complex:45,
                 from /usr/include/c++/12/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/12/bits/stdc++.h:54:
/usr/include/c++/12/bits/stl_algobase.h:300:5: note:                 'template<class _Tp, class _Compare> const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  300 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/12/bits/stl_algobase.h:254:5: note:                 'template<class _Tp> const _Tp& std::max(const _Tp&, const _Tp&)'
  254 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/in/foo.cc:3:7: note:                 'int max'
    3 | int n,max=0,cnt,z;
      |       ^~~
/in/foo.cc:30:25: error: reference to 'max' is ambiguous
   30 |                         max=cnt;
      |                         ^~~
/usr/include/c++/12/bits/stl_algo.h:5756:5: note: candidates are: 'template<class _Tp, class _Compare> _Tp std::max(initializer_list<_Tp>, _Compare)'
 5756 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/12/bits/stl_algo.h:5746:5: note:                 'template<class _Tp> _Tp std::max(initializer_list<_Tp>)'
 5746 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/12/bits/stl_algobase.h:300:5: note:                 'template<class _Tp, class _Compare> const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  300 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/12/bits/stl_algobase.h:254:5: note:                 'template<class _Tp> const _Tp& std::max(const _Tp&, const _Tp&)'
  254 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/in/foo.cc:3:7: note:                 'int max'
    3 | int n,max=0,cnt,z;
      |       ^~~
/in/foo.cc:34:15: error: 'K' was not declared in this scope
   34 |         cout<<K;
      |               ^