Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:46:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[nod].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:91:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%d%d%d",&test,&n,&m); ^ user.cpp:95:57: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%d%d %c%c%c%c",&x,&y,&c1,&c2,&c3,&c4); ^