将连续正整数按如下规律排列：

若正整数565位于第a行，第b列，则a+b=____ .

   Li Lei is a student1 Class Two, Grade Seven. He likes football very2. He often plays it after school. And he often goes home3. His home is 4the school. His mother doesn't worry 5him.
   One Sunday morning Li Lei goes to a shop6his mother. The shop is very7. There are many things8it. They get some things. Then his mother says to Li Lei, "What do you 9?"
   "I want to get a red blouse," says Li Lei. "A red blouse?" asks his mother. "You are a10. You can’t wear a red blouse."
   Li Lei smiled"OK, please get me football clothes."