/in/foo.cc: In function 'void dfs(int)':
/in/foo.cc:28:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<edge[x].size();i++)
                 ~^~~~~~~~~~~~~~~
/in/foo.cc: Assembler messages:
/in/foo.cc:105: Error: unsupported instruction `mov'
/in/foo.cc:106: Error: invalid instruction suffix for `push'