ok=1;
 for(i=1;i<=nr && ok ;i++)
 {
  util=s-v[i].s;
  ok=1;
  a=1;
  b=nr;
  for(;a<b && ok;) {
   mij=(a+b)/2;
   if(v[mij].s==util) {
    fout<<v[i].i<<" "<<v[i].j<<" "<<v[i].k<<" "<<v[mij].i<<" "<<v[mij].j<<" "<<v[mij].k;
    ok=0;
   }
   if(v[mij].s>util) b=mij-1;
   if(v[mij].s<util) a=mij+1;
  } 
 }

 if(ok) fout<<-1;
 fout.close();