/in/foo.cc: In function 'void dfs2(int)':
/in/foo.cc:7:23: error: 'typeof' was not declared in this scope
     for(typeof(v.end())i=v.begin();i!=v.end();++i)
                       ^
/in/foo.cc:27:5: note: in expansion of macro 'FOR'
     FOR(i,e[u])
     ^~~
/in/foo.cc:27:9: error: 'i' was not declared in this scope
     FOR(i,e[u])
         ^
/in/foo.cc:7:36: note: in definition of macro 'FOR'
     for(typeof(v.end())i=v.begin();i!=v.end();++i)
                                    ^
/in/foo.cc:7:23: error: 'typeof' was not declared in this scope
     for(typeof(v.end())i=v.begin();i!=v.end();++i)
                       ^
/in/foo.cc:32:5: note: in expansion of macro 'FOR'
     FOR(i,e[u])
     ^~~
/in/foo.cc:32:9: error: 'i' was not declared in this scope
     FOR(i,e[u])
         ^
/in/foo.cc:7:36: note: in definition of macro 'FOR'
     for(typeof(v.end())i=v.begin();i!=v.end();++i)
                                    ^