Compilare: main.cpp: In function 'void dfs(int)': main.cpp:21:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(it = 0; it < v[nod].size(); it++) ~~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:65:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < comp.size(); i++, g << '\n') ~~^~~~~~~~~~~~~ main.cpp:66:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j = 0; j < comp[i].size(); j++) ~~^~~~~~~~~~~~~~~~