运行 ID: 107814

Main.cc: In function ‘void aa(int)’:
Main.cc:14:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       for(int z=0;z=0;y--)
            ^~
Main.cc:35:12: note: suggested alternative: ‘int’
  for(int y=in.size()-1;y>=0;y--)
            ^~
            int
Main.cc:34:6: warning: unused variable ‘e’ [-Wunused-variable]
  int e=a;
      ^