Compilare: user.cpp: In function ‘void Find(int, int, int)’: user.cpp:29:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[p1].size();++i) ^ user.cpp:32:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=stare=sum=0;i<v[p2].size();++i) ^ user.cpp:39:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[p1].size();++i) ^ user.cpp: In function ‘void Dfs(int, int)’: user.cpp:45:36: warning: unused variable ‘j’ [-Wunused-variable] int val = (1<<v[nod].size()),i,j; ^