Compilare: main.cpp: In function 'void dfs(int)': main.cpp:18:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'void dfs1(int)': main.cpp:32:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v1[nod].size();i++) ~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:77:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0;j<ctc[i].size();j++) ~^~~~~~~~~~~~~~