Compilare: main.cpp: In function 'void FILL(int, int, int)': main.cpp:53:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int it2 = 0; it2 < v[ind].size(); ++it2) ~~~~^~~~~~~~~~~~~~~ main.cpp: In function 'int DFS(int)': main.cpp:78:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[nod].size(); ++i) ~~^~~~~~~~~~~~~~~ main.cpp:87:1: warning: control reaches end of non-void function [-Wreturn-type] } ^