Compilare: main.cpp: In function 'void dfs1(int)': main.cpp:11:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'void dfs2(int)': main.cpp:19:18: 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:52:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<ctc[i].size();j++) ~^~~~~~~~~~~~~~