

int main ()
{
  int z, q, s, l ;
  for( z = 10; z <= 50; z = z + 10)
  {
	  for( q = 10; q <= 50; q = q + 10)
	  {
		  for(s =10; s <= 50; s = s + 10)
		  {
			  for(l = 10;  l <= 50; l = l +10)
			  {
				  if ( (z + q == s +l) && (z + l > s + q) && (z + s< q))//?????q?????s?z?l????q??z?????s?
					  cout <<"l"<<" "<<l<<endl<<"q"<<" "<<q<<endl<<"z"<<" "<<z<<endl<<"s"<<" "<<s<<endl;
			  }
		  }
	  }
  }
  return 0;
}

