Compilare: user.cpp: In function ‘void dfs(int, int)’: user.cpp:13:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (t=0; t<v[j].size(); ++t) ^ user.cpp: In function ‘int main()’: user.cpp:38:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0; j<v[i].size(); ++j) ^ user.cpp:28:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(intrare,"%d%d",&n,&m); ^ user.cpp:31:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(intrare,"%d%d",&x,&y); ^