foo.cc: In function 'int main()':
foo.cc:42:7: warning: unused variable 'j' [-Wunused-variable]
  ll i,j,m;
       ^
foo.cc:51:50: warning: 'm' may be used uninitialized in this function [-Wmaybe-uninitialized]
   if(i/d[n-1]==1||i/d[n-1]==4||i/d[n-1]==6||i/d[m-1]==8||i/d[n-1]==9)
                                                 ~^~

自豪的采用HydroJudge(https://github.com/hydro-dev/Hydro)进行评测。