foo.cc: In function 'void jzzh(std::string)':
foo.cc:21:20: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   21 |         if('A'<=ans&&ans<='Z'||'a'<=ans&&ans<='z')a1++;
      |            ~~~~~~~~^~~~~~~~~~
foo.cc: In function 'int main()':
foo.cc:26:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |         for(int i=0;i<s.size();i++)
      |                     ~^~~~~~~~~
foo.cc:30:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |                 if(s[i]==' '||i==s.size()-1){
      |                               ~^~~~~~~~~~~~

[Hydro](https://hydro.ac)提供评测服务