Compilare: main.cpp: In function 'void DFS(int, std::vector<int>&, std::vector<int>*)': main.cpp:14:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < fii[node].size(); ++i) ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'void DFS2(int, std::vector<int>&, std::vector<int>*)': main.cpp:24:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < parinti[node].size(); ++i) ~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:66:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < result[i].size(); j++) ~~^~~~~~~~~~~~~~~~~~