/in/foo.cc: In function 'void Dijkstra(int)':
/in/foo.cc:62:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
      for(int k=0;k<g[i].size();k++)
                  ~^~~~~~~~~~~~
/in/foo.cc:68:28: warning: narrowing conversion of 'dist[j]' from 'long long int' to 'int' inside { } [-Wnarrowing]
        pq.push((twq){dist[j],j});
                      ~~~~~~^