Compilare: main.cpp: In function 'void dfs(int)': main.cpp:28:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<g[nod].size(); ++i) ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:57:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0; j<g[tp[i]].size(); ++j) { ~^~~~~~~~~~~~~~~~