Compilare: user.cpp: In function ‘void df(int)’: user.cpp:13:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<a[x].size();i++) ^ user.cpp: In function ‘void dfs(int)’: user.cpp:22:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<at[x].size();i++) ^ user.cpp: In function ‘int verif()’: user.cpp:30:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<d[nod].size()&&ok==1;i++) ^ user.cpp: In function ‘void afisare()’: user.cpp:38:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<d[nod].size();i++) ^ user.cpp: In function ‘void rezolva()’: user.cpp:64:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(d[i].size()>=max1) ^