A leap year has one day added to February for being synchronized with the seasonal year. A leap year appears with a regular frequency, which is determined by the following rule:

• A year must either be divisible by 400 or divisible by 4 and not 100.

Given a year you must implement a function that returns true if it's a leap year, or false if it's not.

Examples

is_leap(2020) ➞ true
# Exactly divided by 4 and not by 100.

is_leap(1800) ➞ false
# Exactly divided by 4, but is also exactly divided by 100.

is_leap(2000) ➞ true
# Exactly divided by 400.

is_leap(2019) ➞ false
# It can't be exactly divided by 400 or by 4.

Notes

• Exactly divided can be interpreted as the remainder of the division is equal to 0.
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