Leap Year

•  if year is divisible by 4 and not divisible by 100 or not divisible by 400 then it is a leap year.
• if yea is divisible by 4 and then

1. it is divisible by 100 but not divisible by 400 then it's Not  a leap year
2. it is divisible by 100 but also divisible by 400 then it is a Leap year