/in/foo.cc: In function 'bool Judge1(int, int, int, int, std::__cxx11::string)':
/in/foo.cc:9:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0;i<t.size();i++)
               ~^~~~~~~~~
/in/foo.cc:14:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int j=i;j<t.size();j++)
                     ~^~~~~~~~~
/in/foo.cc:21:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int j=i;j<t.size();j++)
                     ~^~~~~~~~~
/in/foo.cc:28:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^