Compilare: user.cpp: In function ‘int unite(int, int)’: user.cpp:126:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘void solve()’: user.cpp:130:13: warning: variable ‘e1’ set but not used [-Wunused-but-set-variable] int i , e1 ; ^ user.cpp: In function ‘void DFS(int)’: user.cpp:161:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0 ; i < graf[nod].size() ; i++ ) ^