/in/foo.cc: In function 'void search(long long int, long long int, long long int)':
/in/foo.cc:38:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |         for(int j=0; j<G[now].size(); ++j)search(G[now][j], now, barget);
      |                      ~^~~~~~~~~~~~~~