Compilare: main.cpp: In function 'void bfs(int)': main.cpp:32:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < G[el].size(); i++) { ~~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:69:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < CTC[i].size(); ++j) allPopNumbers.push_back(CTC[i][j]); ~~^~~~~~~~~~~~~~~ main.cpp: In function 'void DFS(int)': main.cpp:82:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < G[Nod].size(); i++) ~~^~~~~~~~~~~~~~~ main.cpp: In function 'void DFS_T(int)': main.cpp:95:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < GT[Nod].size(); i++) ~~^~~~~~~~~~~~~~~~