/in/foo.cc: In function 'void DIJ(int)':
/in/foo.cc:42:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int k=0;k<norid[i].size();k++)
               ~^~~~~~~~~~~~~~~~
/in/foo.cc:56:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int k=0;k<vipid[i].size();k++)
                ~^~~~~~~~~~~~~~~~
/in/foo.cc:34:7: warning: unused variable 'dis' [-Wunused-variable]
   int dis=q.top().dis;
       ^~~