Compilare: user.cpp: In function ‘void dfs2(int)’: user.cpp:34:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i< ch[node].size() ; i++) ^ user.cpp: In function ‘int InitializeLCA()’: user.cpp:65:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int GoTo(int, int)’: user.cpp:92:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<ch[from].size();i++) ^ user.cpp: In function ‘int Lee(int, int, int)’: user.cpp:135:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i<ch[lst.V].size();i++) ^ user.cpp:157:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Endless.size();i++) ^ user.cpp: In function ‘void dfs(int, int)’: user.cpp:208:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<ch[nod].size();i++) ^