You are required to write a Python program that determines if a given year is a leap year. A leap

year occurs according to the following rules: $(1\mathrm{.}5$ point$)$

$1.$ A year is a leap year if it is divisible by $4$ but not divisible by $100.$

$2.$ However, if a year is divisible by $400,$ then it is also a leap year.