Compilare: user.cpp: In function ‘void dfs(int, int, int)’: user.cpp:37:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[k].size(); i++) ^ user.cpp: In function ‘bool backoff(int, int, int, int)’: user.cpp:65:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[nod].size(); i++)if((v[nod][i]!=stop||k==k_maxi-1)&&viz[v[nod][i]]==0&&backoff(k + 1, k_maxi, v[nod][i], stop) == true)return true; ^ user.cpp: In function ‘void what(std::vector<int>&, int, int)’: user.cpp:73:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0 ; i < g.size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:117:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1 ; i < comp.size() && kill == 0; i++)what(comp[i], starts[i - 1], starts[i]); ^ user.cpp:124:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0 ; i < sol.size(); i++)cout << sol[i] << " " ; ^