foo.cc: In function 'int solve(int)':
foo.cc:49:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0;i<g[temp.inde].size();i++)
               ~^~~~~~~~~~~~~~~~~~~~
foo.cc: In function 'int main()':
foo.cc:95:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0;i<g[temp.inde].size();i++)
               ~^~~~~~~~~~~~~~~~~~~~
foo.cc:66:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d",&n,&m);
  ~~~~~^~~~~~~~~~~~~~~
foo.cc:69:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&k[i]);
   ~~~~~^~~~~~~~~~~~
foo.cc:73:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d",&t[i].u,&t[i].v);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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