Compilare: user.cpp: In function ‘int main()’: user.cpp:44:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<v[nod].size(); ++i) ^ user.cpp:22:43: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(intrare,"%d%d%d%d",&n,&m,&x,&y); ^ user.cpp:25:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(intrare,"%d%d%d",&a,&b,&c); ^