Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:37:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Adj[s].size(); i++) ^ user.cpp:52:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < node[s].L.size(); i++) ^ user.cpp:68:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < node[s].E.size() - 1; i++) ^ user.cpp: In function ‘void dfs1(int)’: user.cpp:74:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Adj[s].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:88:9: warning: unused variable ‘p’ [-Wunused-variable] int p; ^