Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:44:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < conflict[nod].size (); ++ i) { ~~^~~~~~~~~~~~~~~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:64:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < Events.size (); ++ i) { ~~^~~~~~~~~~~~~~~~ user.cpp:90:20: warning: statement has no effect [-Wunused-value] tip[i] == 1; ~~~~~~~^~~~