Compilare: user.cpp: In function ‘bool conex(int)’: user.cpp:91:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<G[vf].size(); ++i) ^ user.cpp: In function ‘int caut_vf_adiacent(int)’: user.cpp:142:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<G[aux].size(); ++i) ^ user.cpp: In function ‘void citire()’: user.cpp:71:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d", &n, &m); ^ user.cpp:74:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d", &a, &b); ^