Compilare: main.cpp: In function 'void sortare_topologica()': main.cpp:21:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[k].size();i++){ ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:65:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<GT[k].size();j++){ ~^~~~~~~~~~~~~ main.cpp:72:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<G[k].size();j++){ ~^~~~~~~~~~~~