Compilare: main.cpp: In function 'void DFS(int, int)': main.cpp:19:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[nod].size(); i++) ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:46:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < E.size(); i++) ~~^~~~~~~~~~ main.cpp:49:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; (1<<i) < E.size(); i++) ~~~~~~~^~~~~~~~~~ main.cpp:51:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 1; j+(1<<i) -1 < E.size(); j++) ~~~~~~~~~~~~^~~~~~~~~~