Compilare: user.cpp: In function ‘int main()’: user.cpp:36:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k=0; k<neighbors[j].size() && bine; k++) ^ user.cpp: In function ‘void dfs(int)’: user.cpp:74:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<neighbors[nod].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:15:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&T); ^ user.cpp:19:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&N); ^ user.cpp:22:60: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d",&muchii[j][0],&muchii[j][1]); ^