Compilare: main.cpp: In function 'void dfs(int)': main.cpp:18:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<G[nod].size(); i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'void dfsT(int)': main.cpp:33:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<GT[nod].size(); i++) ~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:68:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<components[i].size(); j++) ~^~~~~~~~~~~~~~~~~~~~~ main.cpp:72:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int z=0; z<G[nod].size(); z++) ~^~~~~~~~~~~~~~