Compilare: user.cpp: In function ‘void DFS(int, int)’: user.cpp:52:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[node].size(); i++) ^ user.cpp:62:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[node].size(); i++) ^ user.cpp:98:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < G[node].size(); j++) ^ user.cpp:50:9: warning: unused variable ‘Last’ [-Wunused-variable] int Last = 0, l = 0; ^