Compilare: user.cpp: In function ‘int aug_find(int, int, int)’: user.cpp:21:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[nod].size(); i++) ^ user.cpp: In function ‘void dfs(int, int)’: user.cpp:36:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[nod].size(); i++) ^ user.cpp:47:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[nod].size(); i++) ^