Compilare: user.cpp: In function ‘int DFS(int)’: user.cpp:73:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i<G[n].size();i++) ^ user.cpp:81:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i<G[n].size(); i++) ^ user.cpp: In function ‘void Citire()’: user.cpp:58:39: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d %d", &N, &M, &E); ^ user.cpp:63:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d", &x, &y); ^