Compilare: user.cpp: In function ‘void DFS(int, int)’: user.cpp:33:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[node].size(); i++) ^ user.cpp: In function ‘void DFS2(int, int)’: user.cpp:69:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < G[node].size(); j++) ^ user.cpp:78:13: warning: statement has no effect [-Wunused-value] for(conf; conf >= 0; conf--) ^ user.cpp:82:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < R[node].size(); j++) ^ user.cpp:95:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < G[node].size() && s != 0x3f3f3f3f; j++) ^ user.cpp:101:47: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k = 0; k < R[neighb].size(); k++) ^ user.cpp:114:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < R[node].size(); j++) ^