Compilare: user.cpp: In function ‘int main()’: user.cpp:26:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<l[nod].size();i++){ ^ user.cpp:11:31: warning: variable ‘maxi’ set but not used [-Wunused-but-set-variable] int n,i,p,u,nod,vecin,a,b,maxi,st; ^ user.cpp:12:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&n); ^ user.cpp:14:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d",&a,&b); ^