Compilare: user.cpp: In function ‘int Hash(var)’: user.cpp:53:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < H[n].size();i++){ ^ user.cpp: In function ‘int main()’: user.cpp:91:24: warning: ‘nod’ may be used uninitialized in this function [-Wmaybe-uninitialized] dfs(i,nod,code); ^